Document:

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                                                                    EXHIBIT 4.11

NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE
EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR
THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
REGISTRATION UNDER SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"),
AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE
EXEMPTION FROM THE REGISTRATION REQUIREMENTS THEREUNDER AND IN COMPLIANCE WITH
APPLICABLE STATE SECURITIES OR BLUE SKY LAWS.

                  CHROMATICS COLOR SCIENCES INTERNATIONAL, INC.

                                     WARRANT

Warrant No. C W 2                                         Dated: August 16, 2000

         Chromatics Color Sciences International, Inc., a New York corporation
(the "Company"), hereby certifies that, for value received, Wharton Capital
Partners, Ltd., or its registered assigns ("Holder"), is entitled, subject to
the terms set forth below, to purchase from the Company up to a total of 30,000
shares of common stock, $.001 par value per share (the "Common Stock"), of the
Company (each such share, a "Warrant Share" and all such shares, the "Warrant
Shares") at an exercise price equal to $5.26 per share (as adjusted from time to
time as provided in Section 8, the "Exercise Price"), at any time and from time
to time from and after the date hereof and through and including August 16, 2005
(the "Expiration Date"), and subject to the following terms and conditions:

                  1. Registration of Warrant. The Company shall register this
Warrant, upon records to be maintained by the Company for that purpose (the
"Warrant Register"), in the name of the record Holder hereof from time to time.
The Company may deem and treat the registered Holder of this Warrant as the
absolute owner hereof for the purpose of any exercise hereof or any distribution
to the Holder, and for all other purposes, and the Company shall not be affected
by notice to the contrary.

                  2. Registration of Transfers and Exchanges.

                           (a) The Company shall register the transfer of any
portion of this Warrant in the Warrant Register, upon surrender of this Warrant,
with the Form of Assignment attached hereto duly completed and signed, to the
Transfer Agent or to the Company at its address for notice set forth in Section
12. Upon any such registration or transfer, a new warrant to purchase Common
Stock, in substantially the form of this Warrant (any such new warrant, a "New
Warrant"), evidencing

<PAGE>   2
the portion of this Warrant so transferred shall be issued to the transferee and
a New Warrant evidencing the remaining portion of this Warrant not so
transferred, if any, shall be issued to the transferring Holder. The acceptance
of the New Warrant by the transferee thereof shall be deemed the acceptance of
such transferee of all of the rights and obligations of a holder of a Warrant.
Any transfer or assignment of this Warrant and Warrant Shares obtained by the
Holder in exercise of this Warrant is subject to the requirement that such
securities be registered under the Securities Act of 1933, as amended (the
"Securities Act"), and applicable state securities laws or that such transfer or
assignment be exempt from registration under such laws.

                           (b) This Warrant is exchangeable, upon the surrender
hereof by the Holder to the office of the Company at its address for notice set
forth in Section 12 for one or more New Warrants, evidencing in the aggregate
the right to purchase the number of Warrant Shares which may then be purchased
hereunder. Any such New Warrant will be dated the date of such exchange.

                  3. Duration and Exercise of Warrants.

                           (a) This Warrant shall be exercisable by the
registered Holder on any business day before 6:30 P.M., New York City time, at
any time and from time to time on or after the date hereof to and including the
Expiration Date. At 6:30 P.M., New York City time on the Expiration Date, the
portion of this Warrant not exercised prior thereto shall be and become void and
of no value. Prior to the Expiration Date, the Company may not call or otherwise
redeem this Warrant.

                           (b) Upon delivery of a duly completed and signed Form
of Election to Purchase attached hereto (and the grid attached hereto as Annex
A) duly completed and signed, to the Company at its address for notice set forth
in Section 12 and upon payment of the Exercise Price multiplied by the number of
Warrant Shares that the Holder intends to purchase hereunder, in the manner
provided hereunder, all as specified by the Holder in the Form of Election to
Purchase, the Company shall promptly (but in no event later than 3 business days
after the Date of Exercise (as defined herein)) issue or cause to be issued and
cause to be delivered to or upon the written order of the Holder and in such
name or names as the Holder may designate, a certificate for the Warrant Shares
issuable upon such exercise, free of restrictive legends except (i) either in
the event that a registration statement covering the resale of the Warrant
Shares and naming the Holder as a selling stockholder thereunder is not then
effective or the Warrant Shares are not freely transferable without volume
restrictions pursuant to Rule 144(k) promulgated under the Securities Act, or
(ii) if this Warrant shall have been issued pursuant to a written agreement
between the original Holder and the Company, as required by such agreement. Any
person so designated by the Holder to receive Warrant Shares shall be deemed to
have become holder of record of such Warrant Shares as of the Date of Exercise
of this Warrant. The Company shall, upon request of the Holder, if available,
use its best efforts to deliver Warrant Shares hereunder electronically through
the Depository Trust Corporation or another established clearing corporation
performing similar functions.

                                      -2-

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                           A "Date of Exercise" means the date on which the
Company shall have received (i) the Form of Election to Purchase completed and
duly signed, and (ii) payment of the Exercise Price for the number of Warrant
Shares so indicated by the Holder to be purchased.

                           (c) This Warrant shall be exercisable, either in its
entirety or, from time to time, for a portion of the number of Warrant Shares.

                  4. Piggyback Registration Rights. This Warrant is subject to
the piggyback registration rights granted under the Registration Rights
Agreement and such piggyback registration rights shall continue until all of the
Holder's Warrant Shares have been sold in accordance with an effective
registration statement or upon the Expiration Date. The Company will pay all
registration expenses in connection therewith as provided in the Registration
Rights Agreement.

                  5. Payment of Taxes. The Company will pay all documentary
stamp taxes attributable to the issuance of Warrant Shares upon the exercise of
this Warrant; provided, however, that the Company shall not be required to pay
any tax which may be payable in respect of any transfer involved in the
registration of any certificates for Warrant Shares or Warrants in a name other
than that of the Holder. The Holder shall be responsible for all other tax
liability that may arise as a result of holding or transferring this Warrant or
receiving Warrant Shares upon exercise hereof.

                  6. Replacement of Warrant. If this Warrant is mutilated, lost,
stolen or destroyed, the Company shall issue or cause to be issued in exchange
and substitution for and upon cancellation hereof, or in lieu of and
substitution for this Warrant, a New Warrant, but only upon receipt of evidence
reasonably satisfactory to the Company of such loss, theft or destruction and
indemnity, if requested, satisfactory to it. Applicants for a New Warrant under
such circumstances shall also comply with such other reasonable regulations and
procedures and pay such other reasonable charges as the Company may prescribe.

                  7. Reservation of Warrant Shares. The Company covenants that
it will at all times reserve and keep available out of the aggregate of its
authorized but unissued Common Stock, solely for the purpose of enabling it to
issue Warrant Shares upon exercise of this Warrant as herein provided, the
number of Warrant Shares which are then issuable and deliverable upon the
exercise of this entire Warrant, free from preemptive rights or any other actual
contingent purchase rights of persons other than the Holder (taking into account
the adjustments and restrictions of Section 8). The Company covenants that all
Warrant Shares that shall be so issuable and deliverable shall, upon issuance
and the payment of the applicable Exercise Price in accordance with the terms
hereof, be duly and validly authorized, issued and fully paid and nonassessable.

                  8. Certain Adjustments. The Exercise Price and number of
Warrant Shares issuable upon exercise of this Warrant are subject to adjustment
from time to time as set forth in this Section 8.

                                      -3-

<PAGE>   4
                           (a) If the Company, at any time while this Warrant is
outstanding, (i) shall pay a stock dividend (except scheduled dividends paid on
outstanding preferred stock as of the date hereof which contain a stated
dividend rate) or otherwise make a distribution or distributions on shares of
its Common Stock or on any other class of capital stock payable in shares of
Common Stock, (ii) subdivide outstanding shares of Common Stock into a larger
number of shares, or (iii) combine outstanding shares of Common Stock into a
smaller number of shares, the Exercise Price shall be multiplied by a fraction
of which the numerator shall be the number of shares of Common Stock (excluding
treasury shares, if any) outstanding before such event and of which the
denominator shall be the number of shares of Common Stock (excluding treasury
shares, if any) outstanding after such event. Any adjustment made pursuant to
this Section shall become effective immediately after the record date for the
determination of stockholders entitled to receive such dividend or distribution
and shall become effective immediately after the effective date in the case of a
subdivision or combination, and shall apply to successive subdivisions and
combinations.

                           (b) In case of any reclassification of the Common
Stock or any compulsory share exchange pursuant to which the Common Stock is
converted into other securities, cash or property, then the Holder shall have
the right thereafter to exercise this Warrant only into the shares of stock and
other securities and property receivable upon or deemed to be held by holders of
Common Stock following such reclassification or share exchange, and the Holder
shall be entitled upon such event to receive such amount of securities or
property equal to the amount of Warrant Shares such Holder would have been
entitled to had such Holder exercised this Warrant immediately prior to such
reclassification or share exchange. The terms of any such reclassification or
share exchange shall include such terms so as to continue to give to the Holder
the right to receive the securities or property set forth in this Section 8(b)
upon any exercise following any such reclassification or share exchange.

                           (c) If the Company, at any time while this Warrant is
outstanding, shall distribute to all holders of Common Stock (and not to holders
of this Warrant) evidences of its indebtedness or assets or rights or warrants
to subscribe for or purchase any security (excluding those referred to in
Sections 8(a), (b) and (d)), then in each such case the Exercise Price shall be
determined by multiplying the Exercise Price in effect immediately prior to the
record date fixed for determination of stockholders entitled to receive such
distribution by a fraction of which the denominator shall be the Exercise Price
determined as of the record date mentioned above, and of which the numerator
shall be such Exercise Price on such record date less the then fair market value
at such record date of the portion of such assets or evidence of indebtedness so
distributed applicable to one outstanding share of Common Stock as determined by
the Company's independent certified public accountants that regularly examines
the financial statements of the Company (an "Appraiser").

                           (d) In case of any (1) merger or consolidation of the
Company with or into another Person, or (2) sale by the Company of more than
one-half of the assets of the Company (on a book value basis) in one or a series
of related transactions, the Holder shall have the right

                                      -4-

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thereafter to (A) exercise this Warrant for the shares of stock and other
securities, cash and property receivable upon or deemed to be held by holders of
Common Stock following such merger, consolidation or sale, and the Holder shall
be entitled upon such event or series of related events to receive such amount
of securities, cash and property as the Common Stock for which this Warrant
could have been exercised immediately prior to such merger, consolidation or
sales would have been entitled or (B) in the case of a merger or consolidation,
(x) require the surviving entity to issue common stock purchase warrants equal
to the number Warrant Shares to which this Warrant then permits, which newly
issued warrant shall be identical to this Warrant, and (y) simultaneously with
the issuance of such warrant, the Holder of such warrant shall have the right to
exercise such warrant only into shares of stock and other securities, cash and
property receivable upon or deemed to be held by holders of Common Stock
following such merger or consolidation or (C) require the surviving entity from
such merger, acquisition or business combination to pay to the Holder, in cash,
the Black Scholes value of this Warrant. In the case of clause (B), the exercise
price for such new warrant shall be based upon the amount of securities, cash
and property that each share of Common Stock would receive in such transaction
and the Exercise Price of this Warrant immediately prior to the effectiveness or
closing date for such transaction. The terms of any such merger, sale or
consolidation shall include such terms so as continue to give the Holder the
right to receive the securities, cash and property set forth in this Section
upon any conversion or redemption following such event. This provision shall
similarly apply to successive such events. This sub-section (d) shall not apply
if, upon the occurrence of any of the transactions described in items (1) or (2)
of this sub-section (d), the holders of the Company's securities continue to
hold at least 2/3 of the securities of the surviving entity or acquirer of
assets.

                           (e) For the purposes of this Section 8, the following
clauses shall also be applicable:

                                    (i) Record Date. In case the Company shall
take a record of the holders of its Common Stock for the purpose of entitling
them (A) to receive a dividend or other distribution payable in Common Stock or
in securities convertible or exchangeable into shares of Common Stock, or (B) to
subscribe for or purchase Common Stock or securities convertible or exchangeable
into shares of Common Stock, then such record date shall be deemed to be the
date of the issue or sale of the shares of Common Stock deemed to have been
issued or sold upon the declaration of such dividend or the making of such other
distribution or the date of the granting of such right of subscription or
purchase, as the case may be.

                                    (ii) Treasury Shares. The number of shares
of Common Stock outstanding at any given time shall not include shares owned or
held by or for the account of the Company, and the disposition of any such
shares shall be considered an issue or sale of Common Stock.

                           (f) All calculations under this Section 8 shall be
made to the nearest cent or the nearest 1/100th of a share, as the case may be.

                                      -5-

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                           (g) Whenever the Exercise Price is adjusted pursuant
to Section 8(c) above, the Holder, after receipt of the determination by the
Appraiser, shall have the right to select an additional appraiser (which shall
be a nationally recognized accounting firm), in which case the adjustment shall
be equal to the average of the adjustments recommended by each of the Appraiser
and such appraiser. The Holder shall promptly mail or cause to be mailed to the
Company, a notice setting forth the Exercise Price after such adjustment and
setting forth a brief statement of the facts requiring such adjustment. Such
adjustment shall become effective immediately after the record date mentioned
above.

                           (h) If:

                                    (i)      the Company shall declare a
                                             dividend (or any other
                                             distribution) on its Common Stock;
                                             or

                                    (ii)     the Company shall declare a special
                                             nonrecurring cash dividend on or a
                                             redemption of its Common Stock; or

                                    (iii)    the Company shall authorize the
                                             granting to all holders of the
                                             Common Stock rights or warrants to
                                             subscribe for or purchase any
                                             shares of capital stock of any
                                             class or of any rights; or

                                    (iv)     the approval of any stockholders of
                                             the Company shall be required in
                                             connection with any
                                             reclassification of the Common
                                             Stock, any consolidation or merger
                                             to which the Company is a party,
                                             any sale or transfer of all or
                                             substantially all of the assets of
                                             the Company, or any compulsory
                                             share exchange whereby the Common
                                             Stock is converted into other
                                             securities, cash or property; or

                                    (v)      the Company shall authorize the
                                             voluntary dissolution, liquidation
                                             or winding up of the affairs of the
                                             Company,

then the Company shall cause to be mailed to each Holder at their last addresses
as they shall appear upon the Warrant Register, at least 20 calendar days prior
to the applicable record or effective date hereinafter specified, a notice
stating (x) the date on which a record is to be taken for the purpose of such
dividend, distribution, redemption, rights or warrants, or if a record is not to
be taken, the date as of which the holders of Common Stock of record to be
entitled to such dividend, distributions, redemption, rights or warrants are to
be determined or (y) the date on which such reclassification, consolidation,
merger, sale, transfer or share exchange is expected to become effective or
close, and the date as of which it is expected that holders of Common Stock of
record shall be entitled to exchange their shares of Common Stock for
securities, cash or other property deliverable upon such reclassification,
consolidation, merger, sale, transfer, share exchange, dissolution, liquidation
or

                                      -6-

<PAGE>   7
winding up; provided, however, that the failure to mail such notice or any
defect therein or in the mailing thereof shall not affect the validity of the
corporate action required to be specified in such notice.

                  9. Payment of Exercise Price. The Holder shall pay the
Exercise Price in one of the following manners:

                           (a) Cash Exercise. The Holder may deliver immediately
available funds; or

                           (b) Cashless Exercise. The Holder may surrender this
Warrant to the Company together with a notice of cashless exercise, in which
event the Company shall issue to the Holder the number of Warrant Shares
determined as follows:

                                    X = Y [(A-B)/A]

         where:

                                    X = the number of Warrant Shares to be
                                    issued to the Holder.

                                    Y = the number of Warrant Shares with
                                    respect to which this Warrant is being
                                    exercised.

                                    A = the average of the closing sale prices
                                    of the Common Stock for the five (5) trading
                                    days immediately prior to (but not
                                    including) the Date of Exercise.

                                    B = the Exercise Price.

For purposes of Rule 144 promulgated under the Securities Act, it is intended,
understood and acknowledged that the Warrant Shares issued in a cashless
exercise transaction shall be deemed to have been acquired by the Holder, and
the holding period for the Warrant Shares shall be deemed to have been
commenced, on the issue date.

                  10. Certain Exercise Restrictions.

                           (a) A Holder may not exercise this Warrant to the
extent such exercise would result in the Holder, together with any affiliate
thereof, beneficially owning (as determined in accordance with Section 13(d) of
the Securities Exchange Act of 1934, as amended (the "Exchange Act") and the
rules promulgated thereunder) in excess of 4.999% of the then issued and
outstanding shares of Common Stock, including shares issuable upon such exercise
and held by such Holder after application of this Section. Since the Holder will
not be obligated to report to the Company the number of shares of Common Stock
it may hold at the time of an exercise hereunder, unless the exercise at issue
would result in the issuance of shares of Common Stock in excess of 4.999% of
the then outstanding shares of Common Stock without regard to any other shares
which may be

                                      -7-

<PAGE>   8
beneficially owned by the Holder or an affiliate thereof, the Holder shall have
the authority and obligation to determine whether the restriction contained in
this Section will limit any particular exercise hereunder and to the extent that
the Holder determines that the limitation contained in this Section applies, the
determination of which portion of this Warrant is exercisable shall be the
responsibility and obligation of the Holder. If the Holder has delivered a Form
of Election to Purchase for a number of Warrant Shares that, without regard to
any other shares that the Holder or its affiliates may beneficially own, would
result in the issuance in excess of the permitted amount hereunder, the Company
shall notify the Holder of this fact and shall honor the exercise for the
maximum portion of this Warrant permitted to be exercised on such Date of
Exercise in accordance with the periods described herein and, at the option of
the Holder, either keep the portion of the Warrant tendered for exercise in
excess of the permitted amount hereunder for future exercises or return such
excess portion of the Warrant to the Holder. The provisions of this Section may
be waived by a Holder (but only as to itself and not to any other Holder) upon
not less than 61 days prior notice to the Company. Other Holders shall be
unaffected by any such waiver.

                           (b) A Holder may not exercise this Warrant to the
extent such exercise would result in the Holder, together with any affiliate
thereof, beneficially owning (as determined in accordance with Section 13(d) of
the Exchange Act and the rules promulgated thereunder) in excess of 9.999% of
the then issued and outstanding shares of Common Stock, including shares
issuable upon such exercise and held by such Holder after application of this
Section. Since the Holder will not be obligated to report to the Company the
number of shares of Common Stock it may hold at the time of an exercise
hereunder, unless the exercise at issue would result in the issuance of shares
of Common Stock in excess of 9.999% of the then outstanding shares of Common
Stock without regard to any other shares which may be beneficially owned by the
Holder or an affiliate thereof, the Holder shall have the authority and
obligation to determine whether the restriction contained in this Section will
limit any particular exercise hereunder and to the extent that the Holder
determines that the limitation contained in this Section applies, the
determination of which portion of this Warrant is exercisable shall be the
responsibility and obligation of the Holder. If the Holder has delivered a Form
of Election to Purchase for a number of Warrant Shares that, without regard to
any other shares that the Holder or its affiliates may beneficially own, would
result in the issuance in excess of the permitted amount hereunder, the Company
shall notify the Holder of this fact and shall honor the exercise for the
maximum portion of this Warrant permitted to be exercised on such Date of
Exercise in accordance with the periods described herein and, at the option of
the Holder, either keep the portion of the Warrant tendered for exercise in
excess of the permitted amount hereunder for future exercises or return such
excess portion of the Warrant to the Holder. The provisions of this Section may
be waived by a Holder (but only as to itself and not to any other Holder) upon
not less than 61 days prior notice to the Company. Other Holders shall be
unaffected by any such waiver.

                  11. Fractional Shares. The Company shall not be required to
issue or cause to be issued fractional Warrant Shares on the exercise of this
Warrant. The number of full Warrant Shares which shall be issuable upon the
exercise of this Warrant shall be computed on the basis of the aggregate number
of Warrant Shares purchasable on exercise of this Warrant so presented. If any
fraction of a Warrant Share would, except for the provisions of this Section, be
issuable

                                      -8-

<PAGE>   9
on the exercise of this Warrant, the Company shall pay an amount in cash equal
to the Exercise Price multiplied by such fraction.

                  12. Notices. Any and all notices or other communications or
deliveries hereunder shall be in writing and shall be deemed given and effective
on the earliest of (i) the date of transmission, if such notice or communication
is delivered via facsimile at the facsimile telephone number specified in this
Section prior to 6:30 p.m. (New York City time) on a business day, (ii) the
business day after the date of transmission, if such notice or communication is
delivered via facsimile at the facsimile telephone number specified in this
Section later than 6:30 p.m. (New York City time) on any date and earlier than
11:59 p.m. (New York City time) on such date, (iii) the business day following
the date of mailing, if sent by nationally recognized overnight courier service,
or (iv) upon actual receipt by the party to whom such notice is required to be
given. The addresses for such communications shall be: (i) if to the Company, to
5 East 80th Street, New York, New York 10021, facsimile: (212)-717-6675,
attention Darby S. Macfarlane, Chairperson, or (ii) if to the Holder, to the
Holder at the address or facsimile number appearing on the Warrant Register or
such other address or facsimile number as the Holder may provide to the Company
in accordance with this Section.

                  13. Warrant Agent. The Company shall serve as warrant agent
under this Warrant. Upon thirty (30) days' notice to the Holder, the Company may
appoint a new warrant agent. Any corporation into which the Company or any new
warrant agent may be merged or any corporation resulting from any consolidation
to which the Company or any new warrant agent shall be a party or any
corporation to which the Company or any new warrant agent transfers
substantially all of its corporate trust or shareholders services business shall
be a successor warrant agent under this Warrant without any further act. Any
such successor warrant agent shall promptly cause notice of its succession as
warrant agent to be mailed (by first class mail, postage prepaid) to the Holder
at the Holder's last address as shown on the Warrant Register.

                  14. Miscellaneous.

                           (a) This Warrant shall be binding on and inure to the
benefit of the parties hereto and their respective successors and assigns. This
Warrant may be amended only in writing signed by the Company and the Holder and
their successors and assigns.

                           (b) Subject to Section 14(a), above, nothing in this
Warrant shall be construed to give to any person or corporation other than the
Company and the Holder any legal or equitable right, remedy or cause under this
Warrant. This Warrant shall inure to the sole and exclusive benefit of the
Company and the Holder.

                           (c) The corporate laws of the State of New York shall
govern all issues concerning the relative rights of the Company and its
stockholders. All other questions concerning the construction, validity,
enforcement and interpretation of this Warrant shall be governed by and
construed and enforced in accordance with the internal laws of the State of New
York, without

                                      -9-

<PAGE>   10
regard to the principles of conflicts of law thereof. The Company and the Holder
hereby irrevocably submit to the exclusive jurisdiction of the state and federal
courts sitting in the City of New York, borough of Manhattan, for the
adjudication of any dispute hereunder or in connection herewith or with any
transaction contemplated hereby or discussed herein, and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim
that it is not personally subject to the jurisdiction of any such court, or that
such suit, action or proceeding is improper. Each of the Company and the Holder
hereby irrevocably waives personal service of process and consents to process
being served in any such suit, action or proceeding by receiving a copy thereof
sent to the Company at the address in effect for notices to it under this
instrument and agrees that such service shall constitute good and sufficient
service of process and notice thereof. Nothing contained herein shall be deemed
to limit in any way any right to serve process in any manner permitted by law.

                           (d) The headings herein are for convenience only, do
not constitute a part of this Warrant and shall not be deemed to limit or affect
any of the provisions hereof.

                           (e) In case any one or more of the provisions of this
Warrant shall be invalid or unenforceable in any respect, the validity and
enforceability of the remaining terms and provisions of this Warrant shall not
in any way be affected or impaired thereby and the parties will attempt in good
faith to agree upon a valid and enforceable provision which shall be a
commercially reasonable substitute therefor, and upon so agreeing, shall
incorporate such substitute provision in this Warrant.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK,
                             SIGNATURE PAGE FOLLOWS]

                                      -10-
<PAGE>   11
                  IN WITNESS WHEREOF, the Company has caused this Warrant to be
duly executed by its authorized officer as of the date first indicated above.

                          CHROMATICS COLOR SCIENCES
                          INTERNATIONAL, INC.

                          By:_____________________________________
                             Name:
                             Title:
<PAGE>   12
                          FORM OF ELECTION TO PURCHASE

(To be executed by the Holder to exercise the right to purchase shares of Common
Stock under the foregoing Warrant)

To Chromatics Color Sciences International, Inc.:

         The undersigned hereby irrevocably elects to purchase _____________
shares of common stock, $.001 par value per share, of Chromatics Color Sciences
International, Inc. (the "Common Stock") and , if such Holder is not utilizing
the cashless exercise provisions set forth in this Warrant, encloses herewith
$________ in cash, certified or official bank check or checks, which sum
represents the aggregate Exercise Price (as defined in the Warrant) for the
number of shares of Common Stock to which this Form of Election to Purchase
relates, together with any applicable taxes payable by the undersigned pursuant
to the Warrant.

         / / The undersigned does not intend to resell the shares issuable upon
the purchase to which this Form of Election to Purchase applies under the
Underlying Shares Registration Statement or Rule 144(k) promulgated under the
Securities Act of 1933, as amended.

         The undersigned requests that certificates for the shares of Common
Stock issuable upon this exercise be issued in the name of

                                        PLEASE INSERT SOCIAL SECURITY OR TAX
                                        IDENTIFICATION NUMBER

                                        ----------------------------------------

--------------------------------------------------------------------------------
                         (Please print name and address)

Dated:            ,                     Name of Holder:
      ------------  ----

                                        (Print)
                                               ---------------------------------

                                        (By:)
                                               ---------------------------------
                                        (Name:)
                                        (Title:)

                                        (Signature must conform in all respects
                                        to name of holder as specified on the
                                        face of the Warrant)

<PAGE>   13
                               FORM OF ASSIGNMENT

           [To be completed and signed only upon transfer of Warrant]

         FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers
unto ________________________________ the right represented by the within
Warrant to purchase ____________ shares of Common Stock of Chromatics Color
Sciences International, Inc. to which the within Warrant relates and appoints
________________ attorney to transfer said right on the books of Chromatics
Color Sciences International, Inc. with full power of substitution in the
premises.

Dated:

---------------, ----

                              ---------------------------------------
                              (Signature must conform in all respects to name of
                              holder as specified on the face of the Warrant)

                              ---------------------------------------
                              Address of Transferee

                              ---------------------------------------

                              ---------------------------------------

In the presence of:

--------------------------

<PAGE>   14
                                     Annex A

<TABLE>
<CAPTION>
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            Date                   Number of Warrant              Number of Warrant Shares             Number of
                                 Shares Available to be                  Exercised                   Warrant Shares
                                       Exercised                                                      Remaining to
                                                                                                      be Exercised
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                                                                    EXHIBIT 4.12

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                  CHROMATICS COLOR SCIENCES INTERNATIONAL, INC
                                       AND

                              JOSEPHTHAL & CO. INC.

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                                WARRANT AGREEMENT

                            Dated as of June 30, 2000

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<PAGE>   2

         WARRANT AGREEMENT dated as of June 30, 2000 between Chromatics Color
Sciences International, Inc., a New York corporation (the "Company"), and
JOSEPHTHAL & CO. INC., a New York corporation ("Josephthal").

                              W I T N E S S E T H:

         WHEREAS, the Company proposes to issue to Josephthal warrants (the
"Warrants") to purchase up to 200,000 shares of common stock, $.001 par value,
of the Company ("Common Stock"); and

         WHEREAS, Josephthal has agreed pursuant to that certain financial
advisory and investment banking agreement (the "Advisory and Banking Agreement")
dated as of June 12, 2000 between Josephthal and the Company to act as the
Company's financial advisor to render financial and other general advice to the
Company as an investment banker with respect to Transactions and Financings (as
defined in the Advisory and Banking Agreement, a copy of which is attached
hereto as Exhibit 1) and similar matters upon the terms and conditions more
fully set forth in the Advisory and Banking Agreement; and

         WHEREAS, the Warrants to be issued pursuant to this Agreement will be
issued on June 30, 2000 by the Company to Josephthal in consideration for, and
as part of Josephthal's compensation in connection with, its acting as financial
advisor pursuant to the Advisory and Banking Agreement;

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         NOW, THEREFORE, in consideration of the premises made herein, the
agreements herein set forth and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto
agree as follows:

         1.       Grant. Josephthal or its registered assigns (each individually
a "Holder") are hereby granted the right to purchase, at any time from June 30,
2000 until 5:30 P.M., New York time, on June 29, 2005 up to 200,000 shares of
Common Stock (subject to adjustment as provided in Section 8 hereof) at an
initial exercise price of $6.99 per share (subject to adjustment as provided in
Section 8 hereof) subject to the terms and conditions of this Agreement.

         2.       Warrant Certificates. The warrant certificates (the "Warrant
Certificates") delivered and to be delivered pursuant to this Agreement shall be
in the form set forth in Exhibit A attached hereto and made a part hereof, with
such appropriate insertions, omissions, substitutions, and other variations as
required or permitted by this Agreement.

         3.       Exercise of Warrant.

         3.1      Method of Exercise. The Warrants initially are exercisable at
an exercise price (subject to adjustment as provided in Section 8 hereof) per
share of Common Stock set forth in Section 6 hereof, payable by certified or
official bank check in New York Clearing House funds. Upon surrender of a
Warrant Certificate with the annexed Form of Election to Purchase duly executed,
together with payment of the Exercise Price (as hereinafter defined) for the
shares of Common Stock purchased at the Company's principal offices (presently
located at 5 East 80th St., New York, NY 10021) the Holder shall be entitled to
receive a certificate or certificates for such shares of Common Stock. The
purchase rights represented by each Warrant Certificate are exercisable at the
option of the

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Holder thereof, in whole or in part (but not as to fractional shares of the
Common Stock underlying the Warrants). In the case of the purchase of less than
all the shares of Common Stock purchasable under any Warrant Certificate, the
Company shall cancel said Warrant Certificate upon the surrender thereof and
shall execute and deliver a new Warrant Certificate of like tenor for the
balance of the shares of Common Stock purchasable thereunder.

         3.2      Exercise by Surrender of Warrant. In addition to the method of
payment set forth in Section 3.1 and in lieu of any cash payment required
thereunder, the Holder shall have the right at any time and from time to time to
exercise the Warrants in whole or in part by surrendering the Warrant
Certificate in the manner specified in Section 3.1 hereof in exchange for that
number of shares of Common Stock equal to the product of (x) the number of
shares as to which such Warrants are being exercised multiplied by (y) a
fraction, the numerator of which is the Market Price (as hereinafter defined) of
the Common Stock less the Exercise Price and the denominator of which is such
Market Price. Solely for the purposes of this Section 3.2, Market Price shall be
calculated either (i) on the date on which the Form of Election to Purchase
annexed to such Warrant Certificate as to such exercise is deemed to have been
sent to the Company pursuant to Section 14 hereof (the "Notice Date") or (ii) as
the average of the Market Prices for each of the five consecutive trading days
immediately preceding the Notice Date, whichever results in a higher Market
Price.

         4.       Issuance of Certificates. Upon the exercise of the Warrants,
the issuance of certificates for shares of Common Stock or other securities
underlying such Warrants (the "Warrant Securities") shall be made within three
(3) business days thereafter without charge to the Holder including, without
limitation, any tax which may be payable in respect of the issuance thereof, and
such

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certificates shall be issued in the name of the Holder; provided, however, that
the Company shall not be required to pay any tax which may be payable in respect
of any transfer involved in the issuance and delivery of any such certificates
in a name other than that of the Holder and the Company shall not be required to
issue or deliver such certificates unless or until the person or persons
requesting the issuance thereof shall have paid to the Company the amount of
such tax or shall have established to the satisfaction of the Company that such
tax has been paid.

         The Warrant Certificates and the certificates representing the shares
of Common Stock (and/or other securities issuable upon the exercise of the
Warrants) shall be executed on behalf of the Company by the manual or facsimile
signature of the then present Chairman or Vice Chairman of the Board of
Directors or President or Vice President of the Company under its corporate seal
reproduced thereon, attested to by the manual or facsimile signature of the then
present Secretary or Assistant Secretary of the Company. Warrant Certificates
shall be dated the date of execution by the Company upon initial issuance,
division, exchange, substitution or transfer.

         5.       Restriction on Transfer of Warrants. The Holder by its
acceptance thereof, covenants and agrees that the Warrants described therein are
being acquired by it as an investment and not with a view to the distribution
thereof and further agrees not to sell transfer, assign or otherwise dispose of
the Warrants other than to affiliates or employees of the Holder.

         6.       Initial and Adjusted Exercise Price. Subject to adjustment as
provided in Section 8 hereof, the exercise price of each Warrant shall be $6.99
per share (as so adjusted, the "Exercise Price"). The Adjusted Exercise Price of
each Warrant shall be the price which shall result from time to

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time from any and all adjustments of the Exercise Price in accordance with the
provisions of Section 8 hereof.

                  7.       Registration Rights.

         7.1      Registration Under the Securities Act of 1933. The Warrants,
and the shares of Common Stock issuable upon exercise of the Warrants or other
securities issuable upon exercise of the Warrants, have not been registered
under the Securities Act of 1933, as amended (the "Act"). Upon exercise, in part
or in whole, of the Warrant certificates representing the shares of Common Stock
and any other securities issuable upon exercise of the Warrants (collectively,
the "Warrant Securities") shall bear the following legend:

                  The securities represented by this certificate have not been
                  registered under the Securities Act of 1933, as amended (the
                  "Act"), and may not be offered or sold except pursuant to (i)
                  an effective registration statement under the Act, (ii) to the
                  extent applicable, Rule 144 under the Act (or any similar rule
                  under such Act relating to the disposition of securities), or
                  (iii) an opinion of counsel of the holder, if such opinion
                  shall be reasonably satisfactory to counsel to the issuer,
                  that an exemption from registration under such Act is
                  available.

         7.2      Piggyback Registration. If, at any time commencing after the
date hereof and expiring seven (7) years thereafter, the Company proposes to
register any of its securities under the Act (other than in connection with a
merger/acquisition or pursuant to Form S-8 or a similar successor form) it will
give written notice by registered mail, at least twenty (20) days prior to the
filing of each such registration statement, to the Holders of the Warrants
and/or the Warrant Securities of its intention to do so. If the Holders of the
Warrants and/or Warrant Securities notify the Company within twenty (20) days
after receipt of any such notice of its or their desire to include any shares of
Common

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Stock issued or issuable upon the exercise of the Warrants in such proposed
registration statement (and such form of registration statement may be used for
the registration of such shares), the Company shall afford the Holders of the
Warrants and/or Warrant Securities the opportunity to have such securities
registered under such registration statement.

         Notwithstanding the provisions of this Section 7.2, the Company shall
have the right at any time after it shall have given written notice pursuant to
this Section 7.2 (irrespective of whether a written request for inclusion of any
such securities shall have been made) to elect not to file any such proposed
registration statement, or to withdraw the same after the filing but prior to
the effective date thereof.

         7.3      Demand Registration.

         (a)      At any time commencing after the date hereof and expiring five
(5) years thereafter, the Holders of the Warrants and/or Warrant Securities
representing a "Majority" (as hereinafter defined) of such securities (assuming
the exercise of all of the Warrants) shall have the right (which right is in
addition to the registration rights under Section 7.2 hereof), exercisable by
written notice to the Company, to have the Company prepare and file with the
Securities and Exchange Commission (the "Commission"), on one occasion, a
registration statement and such other documents, including a prospectus, as may
be necessary in the opinion of counsel for the Company and counsel for such
Holders, in order to comply with the provisions of the Act, so as to permit a
public offering and sale of their respective Warrant Securities for nine (9)
consecutive months by such Holders and any other Holders of the Warrants and/or
Warrant Securities who notify the Company within ten (10) days after receiving
notice from the Company of such request.

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         (b)      The Company covenants and agrees to give written notice of any
registration request under this Section 7.3 by any Holder or Holders to all
other registered Holders of the Warrants and the Warrant Securities within ten
(10) days from the date of the receipt of any such registration request.

         (c)      In addition to the registration rights under Section 7.2 and
subsection (a) of this Section 7.3, at any time commencing after the date hereof
and expiring five (5) years thereafter, any holder of Warrants and/or Warrant
Securities shall have the right, exercisable by written request to the Company,
to have the Company prepare and file, on one occasion, with the Commission a
registration statement so as to permit a public offering and sale for nine (9)
consecutive months by any such holder of its Warrant Securities; provided,
however, that the provisions of Section 7.4(b) hereof shall not apply to any
such registration request and registration and all costs incident thereto shall
be at the expense of the holder or holders of Warrants and/or Warrant Securities
making such request.

         (d)      Notwithstanding anything to the contrary contained herein, if
the Company shall not have filed a registration statement for the Warrant
Securities within the time period specified in Section 7.4(a) hereof pursuant to
the written notice specified in Section 7.3(a) hereof, the Company agrees that
upon the written notice of election of the holders of a Majority of the Warrants
and/or Warrant Securities it shall repurchase (i) any and all Warrant Securities
held by such holder or holders at the higher of the Market Price (as defined in
Section 8.1) per share of Common Stock on (x) the date of the notice sent
pursuant to Section 7.3(a), or (y) the expiration of the period specified in
Section 7.4(a) and (ii) any and all Warrants held by such holder or holders at
such Market Price less the Exercise Price of such Warrant. Such repurchase shall
be in immediately available funds and shall close within five (5)

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days after the later of (i) the expiration of the period specified in Section
7.4(a), or (ii) the delivery of the written notice of election specified in this
Section 7.3(d).

         7.4      Covenants of the Company with Respect to Registration.

         In connection with any registration under Sections 7.2 or 7.3 hereof,
the Company covenants and agrees as follows:

         (a)      The Company shall use its reasonable best efforts to file a
registration statement within forty-five (45) days of receipt of any demand
therefor, shall use its reasonable best efforts to have any registration
statement declared effective at the earliest time practicable, and shall furnish
each Holder desiring to sell Warrant Securities such number of prospectuses as
shall reasonably be requested.

         (b)      The Company shall pay all costs (excluding fees and expenses
of the Holder(s)' counsel and any underwriting or selling commissions), fees and
expenses in connection with all registration statements filed pursuant to
Sections 7.2 and 7.3(a) hereof, including, without limitation, the Company's
legal and accounting fees, printing expenses, blue sky fees and expenses. The
Holder(s) will pay all costs, fees and expenses in connection with any
registration statement filed pursuant to Section 7.3(c). If the Company shall
fail to comply with the provisions of Section 7.4(a), the Company shall, in
addition to any other equitable or other relief available to the Holders(s), be
liable for any and all actual damages sustained by the Holder(s) requesting
registration of their Warrant Securities.

         (c)      The Company will take all necessary action which may be
required in qualifying or registering the Warrant Securities included in a
registration statement for offering and sale under the securities or blue sky
laws of such states as reasonably are requested by the Holder(s), provided that

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the Company shall not be obligated to execute or file any general consent to do
business under the laws of any such jurisdiction.

         (d)      The Company shall indemnify the holder(s) of the Warrant
Securities to be sold pursuant to any registration statement contemplated by
this Section 7 and each person, if any, who controls such holders within the
meaning of Section 15 of the Act or Section 20(a) of the Securities Exchange Act
of 1934, as amended (the "Exchange Act"), from and against any and all loss,
claim, damage, expense or liability (including all expenses reasonably incurred
in investigating, preparing or defending against any claim) to which any of them
may become subject under the Act, the Exchange Act or otherwise, arising from
any misstatement of any material fact or any omission to state a material fact
in any such registration statement except for any loss, damage, expense or
liability arising out of any information supplied by such holder(s) in writing
specifically for inclusion therein.

         (e)      The holder(s) of the Warrant Securities to be sold pursuant to
a registration statement contemplated by this Section 7 shall severally and not
jointly indemnify the Company, its officers and directors and each person, if
any, who controls the Company within the meaning of Section 15 of the Act or
Section 20(a) of the Exchange Act, from and against any and all loss, claim,
damage, expense or liability (including all expenses reasonably incurred in
investigating, preparing or defending against any claim) to which they may
become subject under the Act, the Exchange Act or otherwise, arising from
information furnished in writing by or on behalf of such holders for specific
inclusion in such registration statement.

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         (f)      Nothing contained in this Agreement shall be construed as
requiring the Holder(s) to exercise their Warrants prior to the initial filing
of any registration statement or the effectiveness thereof.

         (g)      The Company shall not permit the inclusion of any securities
other than the Warrant Securities to be included in any registration statement
filed pursuant to Section 7.3 hereof without the prior written consent of the
holders of the Warrants and Warrant Securities representing a Majority of such
securities (assuming an exercise of all of the Warrants).

         (h)      The Company shall furnish to each Holder participating in an
underwritten offering of Warrant Securities pursuant to a registration statement
contemplated by this Section 7 and to each underwriter participating in such
offering a signed counterpart, addressed to such Holder and underwriter, of (i)
an opinion of counsel to the Company, dated the effective date of such
registration statement and dated the date of the closing under the underwriting
agreement, and (ii) a "cold comfort" letter dated the effective date of such
registration statement and dated the date of the closing under the underwriting
agreement signed by the independent public accountants who have issued a report
on the Company's financial statements included in such registration statement,
in each case covering substantially the same matters with respect to such
registration statement (and the prospectus included therein) and, in the case of
such accountants' letter, with respect to events subsequent to the date of such
financial statements, as are customarily covered in opinions of issuer's counsel
and in accountants' letters delivered to underwriters in underwritten public
offerings of securities.

         (i)      The Company shall as soon as practicable after the effective
date of the registration statement, and in any event within 15 months
thereafter, make "generally available to its security

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holders" (within the meaning of Rule 158 under the Act) an earnings statement
(which need not be audited) complying with Section 11(a) of the Act and covering
a period of at least 12 consecutive months beginning after the effective date of
the registration statement.

         (j)      The Company shall deliver promptly to each Holder
participating in the offering requesting the correspondence and memoranda
described below and to the managing underwriter copies of all correspondence
between the Commission and the Company, its counsel or auditors and all
memoranda relating to discussions with the Commission or its staff with respect
to the registration statement and permit each Holder and underwriter to do such
investigation, upon reasonable advance notice, with respect to information
contained in or omitted from the registration statement as it deems reasonably
necessary to comply with applicable securities laws or rules of the National
Association of Securities Dealers, Inc. ("NASD"). Such investigation shall
include access to books, records and properties and opportunities to discuss the
business of the Company with its officers and independent auditors, all to such
reasonable extent and at such reasonable times and as often as any such Holder
shall reasonably request.

         (k)      The Company shall enter into an underwriting agreement with
the managing underwriter selected for such underwriting by Holders holding a
Majority of the Warrant Securities requested to be included in such
underwriting, which may be Josephthal. Such agreement shall be satisfactory in
form and substance to the Company, each Holder and such managing underwriter,
and shall contain such representations, warranties and covenants by the Company
and such other terms as are customarily contained in agreements of that type
used. The Holders shall be parties to any underwriting agreement relating to an
underwritten sale of their Warrant Securities and may, at their

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option, require that any or all the representations, warranties and covenants of
the Company to or for the benefit of such underwriter shall also be made to and
for the benefit of such Holders. Such Holders shall not be required to make any
representations or warranties to or agreements with the Company or the
underwriter except as they may relate to such Holders and their intended methods
of distribution.

         (l)      For purposes of this Agreement, the term "Majority" in
reference to the holders of Warrants and/or Warrant Securities, shall mean the
holder or holders of in excess of fifty percent (50%) of the then outstanding
Warrants and/or Warrant Securities (assuming the exercise of all of the
Warrants) that have not been resold to the public.

         (m)      In addition to the Warrant Securities, upon the written
request therefor by any Holder(s), the Company shall include in the registration
statement any other securities of the Company held by such Holder(s) as of the
date of filing of such registration statement, including without limitation
restricted shares of Common Stock, options, warrants or any other securities
convertible into or exchangeable for shares of Common Stock.

8.       Adjustments to Exercise Price and Number of Securities.

                  8.1      Computation of Adjusted Exercise Price. Except as
hereinafter provided, in case the Company shall at any time after the date
hereof issue or sell any shares of Common Stock (other than the issuances or
sales referred to in Section 8.7 hereof), including shares held in the Company's
treasury and shares of Common Stock issued upon the exercise of any outstanding
options, rights or warrants to subscribe for shares of Common Stock and shares
of Common Stock issued upon the direct or indirect conversion or exchange of
securities for shares of Common Stock, for a consideration per share less than
the Exercise Price in effect immediately prior to the issuance or sale of

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such shares, or without consideration, then forthwith upon such issuance or
sale, the Exercise Price shall (until another issuance or sale) be reduced to
the price (calculated to the nearest full cent) equal to the quotient derived by
dividing (i) an amount equal to the sum of (a) the total number of shares of
Common Stock outstanding immediately prior to the issuance or sale of such
shares (assuming the exercise of all outstanding options, warrants, or
convertible or exchangeable securities to purchase shares of Common Stock),
multiplied by the Exercise Price in effect immediately prior to such issuance or
sale, and (b) the aggregate of the amount of all consideration, if any, received
by the Company upon such issuance or sale, by (ii) the total number of shares of
Common Stock outstanding immediately after such issuance or sale (assuming the
exercise of all outstanding options, warrants, or convertible or exchangeable
securities to purchase shares of Common Stock).; provided, however, that in no
even shall the Exercise Price be adjusted pursuant to this computation to an
amount in excess of the Exercise Price in effect immediately prior to such
computation, except in the case of a combination of outstanding shares of Common
Stock, as provided by Section 8.3 hereof. For the purposes of any computation to
be made in accordance with this Section 8.1, the following provisions shall
apply:

         (i)      In case of the issuance or sale of shares of Common Stock for
a consideration, part or all of which shall be cash, the amount of the cash
consideration therefor shall be deemed to be the amount of cash received by the
Company for such shares (or, if shares of Common Stock are offered by the
Company for subscription, the subscription price, or if such securities shall be
sold to underwriters or dealers for public offering without a subscription
offering, the initial public offering price) before deducting therefrom any
compensation paid or discount allowed in the sale, underwriting

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or purchase thereof by underwriters or dealers or others performing similar
services, or any expenses incurred in connection therewith.

         (ii)     In case of the issuance or sale (otherwise than as a dividend
or other distribution on any stock of the Company) of shares of Common Stock for
a consideration part or all of which shall be other than cash, the amount of the
consideration therefor other than cash shall be deemed to be the value of such
consideration as determined in good faith by the Board of Directors of the
Company.

         (iii)    Shares of Common Stock issuable by way of dividend or other
distribution on any capital stock of the Company shall be deemed to have been
issued immediately after the opening of business on the day following the record
date for the determination of stockholders entitled to receive such dividend or
other distribution and shall be deemed to have been issued without
consideration.

         (iv)     The reclassification of securities of the Company other than
shares of Common Stock into securities including shares of Common Stock shall be
deemed to involve the issuance of such shares of Common Stock for a
consideration other than cash immediately prior to the close of business on the
date fixed for the determination of security holders entitled to receive such
shares, and the value of the consideration allocable to such shares of Common
Stock shall be determined as provided in subsection (ii) of this Section 8.1.

         (v)      The number of shares of Common Stock at any one time
outstanding shall include the aggregate number of shares issued or issuable
(subject to readjustment upon the actual issuance thereof) upon the exercise of
options, rights, warrants and upon the conversion or exchange of convertible or
exchangeable securities.

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         (vi)     As used herein, the phrase "Market Price" at any date shall be
deemed to be the last reported sale price, or, in case no such reported sale
takes place on such day, the average of the last reported sale prices for the
last three (3) trading days, in either case as officially reported by the
principal securities exchange on which the Common Stock is listed or admitted to
trading, or, if the Common Stock is not listed or admitted to trading on any
national securities exchange, the average closing bid price as furnished by the
NASD through NASDAQ or similar organization if NASDAQ is no longer reporting
such information, or if the Common Stock is not quoted on NASDAQ, as determined
in good faith by resolution of the Board of Directors of the Company, based on
the best information available to it.

         8.2      Options, Rights, Warrants and Convertible and Exchangeable
Securities. In case the Company shall at any time after the date hereof issue
options, rights or warrants to subscribe for shares of Common Stock, or issue
any securities convertible into or exchangeable for shares of Common Stock, for
a consideration per share less than the Exercise Price immediately prior to the
issuance of such options, rights or warrants, or such convertible or
exchangeable securities, or without consideration, the Exercise Price in effect
immediately prior to the issuance of such options, rights or warrants, or such
convertible or exchangeable securities, as the case may be, shall be reduced to
a price determined by making a computation in accordance with the provisions of
Section 8.1 hereof, provided that:

         (a)      The aggregate maximum number of shares of Common Stock, as the
case may be, issuable under such options, rights or warrants shall be deemed to
be issued and outstanding at the time such options, rights or warrants are
issued, and for a consideration equal to the minimum purchase

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price per share provided for in such options, rights or warrants at the time of
issuance, plus the consideration (determined in the same manner as consideration
received on the issue or sale of shares in accordance with the terms of the
Warrants), if any, received by the Company for such options, rights or warrants
and no further adjustment to the Exercise Price shall be made upon the issuance
of shares of Common Stock upon the exercise or conversion of such options,
rights or warrants.

         (b)      The aggregate maximum number of shares of Common Stock
issuable upon conversion or exchange of any convertible or exchangeable
securities shall be deemed to be issued and outstanding at the time of issuance
of such securities, and for a consideration equal to the consideration
(determined in the same manner as consideration received on the issue or sale of
shares of Common Stock in accordance with the terms of the Warrants) received by
the Company for such securities, plus the minimum consideration, if any,
receivable by the Company upon the conversion or exchange thereof and no further
adjustment to the Exercise Price shall be made upon the issuance of shares of
Common Stock upon the exercise or conversion of such options, rights or
warrants.

         (c)      If any change shall occur in the price per share provided for
in any of the options, rights or warrants referred to in subsection (a) of this
Section 8.2, or in the price per share at which the securities referred to in
subsection (b) of this Section 8.2 are convertible or exchangeable, such
options, rights or warrants or conversion or exchange rights, as the case may
be, shall be deemed to have expired or terminated on the date when such price
change became effective in respect of shares not theretofore issued pursuant to
the exercise or conversion or exchange thereof, and the Company shall be deemed
to have issued upon such date new options, rights or warrants or convertible or
exchangeable securities at the new price in respect of the number of shares
issuable upon the exercise

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of such options, rights or warrants or the conversion or exchange of such
convertible or exchangeable securities and no further adjustment to the Exercise
Price shall be made upon the issuance of shares of Common Stock upon the
exercise or conversion of such options, rights, or warrants.

         8.3      Subdivision and Combination. In case the Company shall at any
time subdivide or combine the outstanding shares of Common Stock, the Exercise
Price shall forthwith be proportionately decreased in the case of subdivision or
increased in the case of combination.

         8.4      Adjustment in Number of Securities. Upon each adjustment of
the Exercise Price pursuant to the provisions of Section 8.3, the number of
Warrant Securities issuable upon the exercise of each Warrant shall be adjusted
to the nearest full share by multiplying the Exercise Price in effect
immediately prior to such adjustment by the number of Warrant Securities
issuable upon full exercise of the Warrants immediately prior to such adjustment
and dividing the product so obtained by the adjusted Exercise Price.

         8.5      Definition of Common Stock. For the purpose of this Agreement,
the term "Common Stock" shall mean (i) the class of stock designated as Common
Stock in the Certificate of Incorporation of the Company as may be amended as of
the date hereof, or (ii) any other class of stock resulting from successive
changes or reclassifications of such Common Stock consisting solely of changes
in par value, or from par value to no par value, or from no par value to par
value.

         8.6      Merger or Consolidation. In case of any consolidation of the
Company with, or merger of the Company with, or merger of the Company into, or
sale by the Company of all or substantially all of its assets to another
corporation (other than a consolidation or merger in which the Company is the
surviving corporation), the corporation formed by such consolidation or merger
or

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acquiror of such assets shall execute and deliver to the Holder a supplemental
warrant agreement providing that the Holder of each Warrant then outstanding
shall have the right thereafter (until the expiration of such Warrant) to
receive, upon exercise of such Warrant, the kind and amount of shares of stock
and other securities and property receivable upon such consolidation or merger,
by a holder of the number of shares of Common Stock of the Company for which
such Warrant might have been exercised immediately prior to such consolidation,
merger, sale or transfer. Such supplemental warrant agreement shall provide for
adjustments which shall be identical to the adjustments provided in Section 8.
The above provision of this Section 8.6 shall similarly apply to successive
consolidations or mergers.

         8.7.     No Adjustment of Exercise Price in Certain Cases.
Notwithstanding anything in this Warrant Agreement to the contrary, no
adjustment of the Exercise Price shall be made:

         (a) Upon the issuance or sale of the Warrants or the shares of Common
Stock issuable upon the exercise of the Warrants, or the options, rights,
convertible securities, or exchangeable securities issued and outstanding on the
date hereof;

         (b) Upon the issuance or sale of options issue to employees, directors,
or consultants of the Company pursuant to the Company's Stock Option Plan; or

         (c) If the amount of said adjustment shall be less than 2 cents ($.02)
per Warrant Security, provided, however, that in such case any adjustment that
would otherwise be required then to be made shall be carried forward and shall
be made at the time of and together with the next subsequent adjustment which,
together with any adjustment so carried forward, shall amount to at least 2
cents ($.02) per Warrant Security.

                                       18
<PAGE>   20

         8.8      Dividends and Other Distributions. In the event that the
Company shall at any time prior to the exercise of all Warrants declare a
dividend (other than a dividend consisting solely of shares of Common Stock) or
otherwise distribute to its stockholders any assets, property, rights, evidences
of indebtedness, securities (other than shares of Common Stock), whether issued
by the Company or by another, or any other thing of value, the Holders of the
unexercised Warrants shall thereafter be entitled, in addition to the shares of
Common Stock or other securities and property receivable under the exercise
thereof, to receive, upon the exercise of such Warrants, the same property,
assets, rights, evidences of indebtedness, securities or any other thing of
value that they would have been entitled to receive at the time of such dividend
or distribution as if the Warrants had been exercised immediately prior to such
dividend or distribution. At the time of any such dividend or distribution, the
Company shall make appropriate reserves to ensure the timely performance of the
provisions of this Section 8.8.

         9.       Exchange and Replacement of Warrant Certificates. Each Warrant
Certificate is exchangeable without expense, upon the surrender thereof by the
Holder at the principal executive office of the Company, for a new Warrant
Certificate of like tenor and date representing in the aggregate the right to
purchase the same number of Warrant Securities in such denominations as shall be
designated by the Holder thereof at the time of such surrender.

         Upon receipt by the Company of evidence reasonably satisfactory to it
of the loss, theft, destruction or mutilation of any Warrant Certificate and
indemnity or security reasonably satisfactory to it, and reimbursement to the
Company of all reasonable expenses incidental thereto, and upon

                                       19
<PAGE>   21

surrender and cancellation of the Warrants, if mutilated, the Company will make
and deliver a new Warrant Certificate of like tenor, in lieu thereof.

         10.      Elimination of Fractional Interests. The Company shall not be
required to issue certificates representing fractions of shares of Common Stock
upon the exercise of the Warrants, nor shall it be required to issue scrip or
pay cash in lieu of fractional interests, it being the intent of the parties
that all fractional interests shall be eliminated by rounding any fraction up to
the nearest whole number of shares of Common Stock, or other Warrant Securities.

         11.      Reservation and Listing of Securities. The Company shall at
all times reserve and keep available out of its authorized but unissued shares
of Common Stock, solely for the purpose of issuance upon the exercise of the
Warrants, such number of shares of Common Stock or other Warrant Securities as
shall be issuable upon the exercise thereof. The Company covenants and agrees
that, upon exercise of the Warrants and payment of the Exercise Price therefor,
all shares of Common Stock and other Warrant Securities issuable upon such
exercise shall be duly and validly issued, full paid, non-assessable and not
subject to the preemptive rights of any stockholder. As long as the Warrants
shall be outstanding, the Company shall use its best efforts to cause all shares
of Common Stock issuable upon the exercise of the Warrants to be listed (subject
to official notice of issuance) on all securities exchanges, if any, on which
the Common Stock issued to the public in connection herewith may then be listed
and/or quoted on NASDAQ.

         12.      Notices to Warrant Holders. Nothing contained in this
Agreement shall be construed as conferring upon the Holders the right to vote or
to consent or to receive notice as a stockholder in respect of any meetings of
stockholders of the Company for the election of directors or any other

                                       20
<PAGE>   22

matter, or as having any rights whatsoever as a stockholder of the Company. If,
however, at any time prior to the expiration of the Warrants and their exercise,
any of the following events shall occur:

                  (a) the Company shall take a record of the holders of its
shares of Common Stock for the purpose of entitling them to receive a dividend
or distribution payable otherwise than in cash, or a cash dividend or
distribution payable otherwise than out of current or retained earnings, as
indicated by the accounting treatment of such dividend or distribution on the
books of the Company; or

                  (b) the Company shall offer to all the holders of its Common
Stock any additional shares of capital stock of the Company or securities
convertible into or exchangeable for shares of capital stock of the Company, or
any option, right or warrant to subscribe therefor; or

                  (c) a dissolution, liquidation or winding up of the Company
(other than in connection with a consolidation or merger) or a sale of all or
substantially all of its property, assets and business as an entirety shall be
proposed;

then, in any one or more of said events, the Company shall give written notice
of such event at least ten (10) days prior to the date fixed as a record date or
the date of closing the transfer books for the determination of the stockholders
entitled to such dividend, distribution, convertible or exchangeable securities
or subscription rights, or entitled to vote on such proposed dissolution,
liquidation, winding up or sale.

         13.      (intentionally omitted).

         14.      Notices. All notices, requests, consents and other
communications hereunder shall be in writing and shall be deemed to have been
duly made when delivered, or mailed by registered or certified mail, return
receipt requested:

                                       21
<PAGE>   23

         (a) If to the Holder, to the address of such Holder as shown on the
books of the Company; or

         (b) If to the Company, to the address set forth in Section 3 hereof or
to such other address as the Company may designate by notice to the Holders.

         15.      Supplements and Amendments. The Company and Josephthal may
from time to time supplement or amend this Agreement without the approval of any
Holders of Warrant Certificates (other than Josephthal) in order to cure any
ambiguity, to correct or supplement any provision contained herein which may be
defective or inconsistent with any provisions herein, or to make any other
provisions in regard to matters or questions arising hereunder which the Company
and Josephthal may deem necessary or desirable and which the Company and
Josephthal deem shall not adversely affect the interests of the Holders of
Warrant Certificates.

         16.      Successors. All the covenants and provisions of this Agreement
shall be binding upon and inure to the benefit of the Company, the Holders and
their respective successors and permitted assigns hereunder.

         17.      Governing Law; Submission to Jurisdiction. This Agreement and
each Warrant Certificate issued hereunder shall be deemed to be a contract made
under the laws of the State of New York and for all purposes shall be construed
in accordance with the laws of said State, without giving effect to the rules of
said State governing the conflicts of laws.

         The Company, Josephthal and the Holders hereby agree that any action,
proceeding or claim against it arising out of, or relating in any way to, this
Agreement shall be brought and enforced in the courts of the State of New York
or of the United States of America for the Southern District of

                                       22
<PAGE>   24

New York, and each such party hereby irrevocably submits to such jurisdiction,
which jurisdiction shall be exclusive. The Company, Josephthal and the Holders
hereby irrevocably waive any objection to such exclusive jurisdiction or
inconvenient forum. Any such process or summons to be served upon any of the
Company, Josephthal and the Holders (at the option of the party bringing such
action, proceeding or claim) may be served by transmitting a copy thereof, by
registered or certified mail, return receipt requested, postage prepaid,
addressed to it at the address set forth in Section 14 hereof. Such mailing
shall be deemed personal service and shall be legal and binding upon the party
so served in any action, proceeding or claim. The Company, Josephthal and the
Holders agree that the prevailing party(ies) in any such action or proceeding
shall be entitled to recover from the other party(ies) all of its/their
reasonable legal costs and expenses relating to such action or proceeding and/or
incurred in connection with the preparation therefor.

         18.      Entire Agreement; Modification. This Agreement contains the
entire understanding between the parties hereto with respect to the subject
matter hereof and may not be modified or amended except by a writing duly signed
by the party against whom enforcement of the modification or amendment is
sought.

         19.      Severability. If any provision of this Agreement shall be held
to be invalid or unenforceable, such invalidity or unenforceability shall not
affect any other provision of this Agreement.

         20.      Captions. The caption headings of the Sections of this
Agreement are for convenience of reference only and are not intended, nor should
they be construed as, a part of this Agreement and shall be given no substantive
effect.

                                       23
<PAGE>   25

         21.      Benefits of this Agreement. Nothing in this Agreement shall be
construed to give to any person or corporation other than the Company and
Josephthal and any other registered Holder(s) of the Warrant Certificates or
Warrant Securities any legal or equitable right, remedy or claim under this
Agreement; and this Agreement shall be for the sole and exclusive benefit of the
Company and Josephthal any other Holder(s) of the Warrant Certificates or
Warrant Securities.

         22.      Counterparts. This Agreement may be executed in one or more
counterparts and each of such counterparts shall for all purposes be deemed to
be an original, and such counterparts shall together constitute but one and the
same instrument.

                [THE REST OF THIS PAGE INTENTIONALLY LEFT BLANK]

                                       24
<PAGE>   26

                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed, as of the day and year first above written.

<TABLE>
<S>                                                 <C>
                                                     CHROMATICS COLOR SCIENCES
                                                     INTERNATIONAL, INC.

                                                     By:
                                                         ---------------------------------
Attest:                                              Name:
                                                     Title:

----------------------------------
             , Secretary

                                                              JOSEPHTHAL & CO. INC.

                                                     By:
                                                         ---------------------------------
                                                     Name:
                                                     Title:
</TABLE>

                                       25
<PAGE>   27

EXHIBIT A

THE WARRANTS REPRESENTED BY THIS CERTIFICATE AND THE OTHER SECURITIES ISSUABLE
UPON EXERCISE HEREOF MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO (i) AN
EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933, AS AMENDED
(THE "ACT"), (ii) TO THE EXTENT APPLICABLE, RULE 144 UNDER SUCH ACT (OR ANY
SIMILAR RULE UNDER SUCH ACT RELATING TO THE DISPOSITION OF SECURITIES), OR (iii)
AN OPINION OF COUNSEL TO THE HOLDER, IF SUCH OPINION SHALL BE REASONABLY
SATISFACTORY TO COUNSEL FOR THE ISSUER, THAT AN EXEMPTION FROM REGISTRATION
UNDER SUCH ACT IS AVAILABLE.

THE TRANSFER OR EXCHANGE OF THE WARRANTS REPRESENTED BY THIS CERTIFICATE IS
RESTRICTED IN ACCORDANCE WITH THE WARRANT AGREEMENT REFERRED TO HEREIN.

                            EXERCISABLE ON OR BEFORE
                      5:30 P.M. EASTERN TIME, June 29, 2005

<TABLE>
<S>                                                                  <C>
NO. W-______                                                           _______ Warrants
</TABLE>

                               WARRANT CERTIFICATE

         This Warrant Certificate certifies that ____________________, or
registered assigns (the "Holder"), is the registered holder of ______________
Warrants to purchase initially at any time from June 30, 2000 until 5:30 p.m.
New York time on June 29, 2005 (the "Expiration Date"), up to ( Number of
)fully-paid and non-assessable shares of common stock, $.001 par value ("Common
Stock") of Chromatics Color Sciences International, Inc., a New York corporation
(the "Company"), at the initial exercise price, subject to adjustment in certain
events (the "Exercise Price"), of $6.99 per share of Common Stock upon surrender
of this Warrant Certificate and payment of the applicable Exercise Price at an
office or agency of the Company, but subject to the conditions set forth herein
and in the Warrant Agreement dated as of June 30, 2000 between the Company and
Josephthal & Co. Inc. (the "Warrant Agreement"). Payment of the applicable
Exercise Price shall be made by certified or official bank check in New York
Clearing House funds payable to the order of the Company.

         No Warrant may be exercised after 5:30 p.m., New York time, on the
Expiration Date, at which time all Warrants evidenced hereby, unless exercised
prior thereto, shall thereafter be void.

                                       26
<PAGE>   28

         The Warrants evidenced by this Warrant Certificate are part of a duly
authorized issue of Warrants issued pursuant to the Warrant Agreement, which
Warrant Agreement is hereby incorporated by reference herein and made a part of
this instrument and is hereby referred to for a description of the rights,
limitation of rights, obligations, duties and immunities thereunder of the
Company and the holders (the words "holders" or "holder" meaning the registered
holders or registered holder) of the Warrants.

         The Warrant Agreement provides that upon the occurrence of certain
events, the then applicable Exercise Price and the type and/or number of the
Company's securities issuable thereupon may, subject to certain conditions, be
adjusted. In such event, the Company will, at the request of the Holder, issue a
new Warrant Certificate evidencing the adjustment in the then applicable
Exercise Price and the number and/or type of securities issuable upon the
exercise of the Warrants; provided, however, that the failure of the Company to
issue such new Warrant Certificates shall not in any way change, alter, or
otherwise impair, the rights of the Holder as set forth in the Warrant
Agreement.

         Upon due presentment for registration of transfer of this Warrant
Certificate at an office or agency of the Company in accordance with the
provisions of the Warrant Agreement, a new Warrant Certificate or Warrant
Certificates of like tenor and evidencing in the aggregate a like number of
Warrants shall be issued to the transferee(s) in exchange for this Warrant
Certificate, subject to the limitations provided herein and in the Warrant
Agreement, without any charge except for any tax or other governmental charge
imposed in connection with such transfer.

         Upon the exercise of less than all of the Warrants evidenced by this
Warrant Certificate, the Company shall forthwith issue to the holder hereof a
new Warrant Certificate representing such number of unexercised Warrants.

         The Company may deem and treat the Holder hereof as the absolute owner
of this Warrant Certificate (notwithstanding any notation of ownership or other
writing hereon made by anyone), for the purpose of any exercise hereof, and of
any distribution to the holder(s) hereof, and for all other purposes, and the
Company shall not be affected by any notice to the contrary.

         All terms used in this Warrant Certificate which are defined in the
Warrant Agreement shall have the meanings assigned to them in the Warrant
Agreement.

                                       27
<PAGE>   29

         IN WITNESS WHEREOF, the Company has caused this Warrant Certificate to
be duly executed under its corporate seal.

Dated as of            , 2000

                                   Chromatics Color Sciences International, Inc.

                                   By:
                                      ----------------------------
                                   Name:
                                   Title:

Attest:

-------------------------------
               , Secretary

                                       28
<PAGE>   30

             [FORM OF ELECTION TO PURCHASE PURSUANT TO SECTION 3.1]

         The undersigned hereby irrevocably elects to exercise the right,
represented by this Warrant Certificate, to purchase _______ shares of Common
Stock and herewith tenders in payment for such securities a certified or
official bank check payable in New York Clearing House Funds to the order of
Chromatics Color Sciences International, Inc. in the amount of $__________, all
in accordance with the terms hereof. The undersigned requests that a certificate
for such securities be registered in the name of __________________ whose
address is ____________________ and that such Certificate be delivered to
_______________ whose address is ____________________________.

Dated:

                           Signature
                                     ------------------------------

                           (Signature must conform in all respects to name of
                           holder as specified on the face of the Warrant
                           Certificate)

                           (Insert Social Security or Other
                           Identifying Number of Holder)

                                       29
<PAGE>   31

             [FORM OF ELECTION TO PURCHASE PURSUANT TO SECTION 3.2]

         The undersigned hereby irrevocably elects to exercise the right,
represented by this Warrant Certificate, to purchase _________ shares of Common
Stock all in accordance with the terms hereof and Section 3.2 of the Warrant
Agreement. The undersigned requests that a certificate for such securities be
registered in the name of __________________ whose address is_________________
____________________ and that such Certificate be delivered to _______________
whose address is ____________________.

Dated:

                           Signature
                                     ------------------------------

                           (Signature must conform in all respects to name of
                           holder as specified on the face of the Warrant
                           Certificate)

                           (Insert Social Security or Other
                           Identifying Number of Holder)

                                       30
<PAGE>   32

                              [FORM OF ASSIGNMENT]

         (To be executed by the registered holder if such holder desires to
transfer the Warrant Certificate.)

         FOR VALUE RECEIVED
hereby sells, assigns and transfers unto

         (Please print name and address of transferee)

this Warrant Certificate, together with all right, title and interest therein,
and hereby irrevocably constitutes and appoints _________ Attorney, to transfer
the within Warrant Certificate on the books of the within-named Company, with
full power of substitution.

Dated:

               Signature:
                          ------------------

               (Signature must confirm in all respects to name of holder as
               specified on the face of the Warrant Certificate.)

       (Insert Social Security or Other Identifying Number of Assignee).

                                       31

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