### color:

Coloration
* Most coloration comes from pigment
  - depends on types
* Most coloration has noticeable seasonal variation
  - reflects heat
* Some coloration absorbs heat.
* Some coloration absorbs radiant heat
  - solar heat
  - changes over time
  - comes from food
  - serves protective functions
* also varies with age.
* attracts attention.
* behavioral adaptation found only in mammals a structural adaptation.
* comes from melanocytes which produce the brown pigment melanin
* develops on cooler extremities - ears, nose, tail, feet and legs.
* includes blue-gray and white fur during the winter, which then darkens during the summer
  - shades of gray, tan, or reddish brown
* is choices
  - influenced by radiation, just as tanning takes place upon exposure to sunlight
  - one of the easiest changes for organisms
  - somewhat variable, and there appear to be two primary color phases, dark and pale
  - used to distinguish different oils
  - usually patterns of grays, browns, and blacks, but there is variation
* is variable and in some cases quite striking to the human eye
  - between and within species
* resembles that of regular cats, with a tendency toward dark shades and bright eye colour.
* result of standing waves or resonances in a room.
* results from heating the leaves in the brazing process.
* tends to be darker in humid climates and lighter in arid climates.
* varies depending upon the species and stage of development
  - from locations
  - widely based on subspecies , forms and habitat

### color | coloration:

Aposematic coloration
* is highly visible and indicates the presence of some defensive mechanism
  - present in both the target species and the mimic species
  - protective coloration
* occurs in both target and mimic species.

Blue coloration
* dye added to the epoxy to enhance observation of porosity.
* is actually a dark bluish gray with dark nose and foot pads
  - one indication of a submucus cleft

Cosmetic coloration
* has two different types.
* is another mechanism by which male birds use to try to attract a mate.

Cryptic coloration
* exists in some forms.
* is common in birds but many have bright patterns
  - protective coloration
  - their principle defense mechanism against predators
  - very general in the animal kingdom
* provides camouflage, hiding the animal from predators.
* type of camouflage.

Dark coloration
* Most dark colorations begin to lighten after four weeks of treatment.
* Some dark coloration absorbs heat.

Colouration
* depends on it s environment.
* is color

### color | colouration:

Pigmentation
* can range in shades from very light pink all the way to dark black patches.
* depends on the habitat as well as physiological state.
* gives protection against sun damage.
* good indicator of egg production for the first six months a bird has been laying.
* is caused by melanin which protects the skin from sun
  - common, especially with bowenoid neoplasia
  - dependent upon the color or markings of the coat
  - deposition
  - normal elsewhere than in the eye
* occurs in nearly all living organisms.
* tends to be more extensive and pronounced in people with brown skins.

### color | colouration | pigmentation:

Pigmentation change
* are the most undesirable side effect of dermabrasion.
* indicate thermal sensory deficits.

### color | colouration | pigmentation:

Polyphenic pigmentation
* is adaptive for species which reproduce several times a year.
+ Polyphenism, Other examples, Seasonal changes: Developmental biology :: Genetics
  * Polyphenic pigmentation is adaptive for species which reproduce several times a year. Different pigment patterns provide camouflage throughout the seasons, and alter heat retention as temperatures change. Because insects cease growth and development after they are adults, their pigment pattern is set in adulthood. In the case of the Peppered moth, 'Biston betularia', the caterpillars are polyphenic.