A method of selecting and manufacturing a non-volatile colour formulation for manufacturing, in a selected colour, a part comprising a polymeric material, the method comprising the following steps: (i) at a first location, determining colour information relating to a desired colour for the polymeric material; (ii) communicating colour information determined in step (i) to a second location; (iii) at the second location, determining via a computing means, one or more colour formulations for delivery into a polymeric material to match or closely match the desired colour, wherein said one or more colour formulations is selected having regard to one or more of the following variables, in addition to the variable of colour information: (a) the identity of the polymer into which the colour formulation is to be incorporated; (b) the grade of polymer into which the colour formulation is to be incorporated; (c) the processing conditions to which the polymer into which the colour formulation is to be incorporated will be subjected; (d) the use and/or requirements of the part for which the colour formulation is to be selected; (e) country of use; (iv) delivery information relating to the colour formulation(s) determined in step (iii) to an assessment location for assessment; (v) optionally repeating step (iii) to determine one or more additional colour formulations for delivery into the polymeric material to match or closely match the desired colour; (vi) the selection of a colour formulation for use in the manufacture of the part; (vii) wherein the computing means in the second location communicates information relating to the amounts of base colour formulations to be dispensed by a colour dispense system, wherein information relating to the amounts of base colour formulations to be dispensed is communicated from a location which is remote from the colour dispense system and wherein said colour dispense system includes more than 10 base colour formulations; (viii) wherein the colour formulation is manufactured using said colour dispense system. (i) at a first location, determining colour information relating to a desired colour for the polymeric material; (ii) communicating colour information determined in step (i) to a second location; (iii) at the second location, determining via a computing means, one or more colour formulations for delivery into a polymeric material to match or closely match the desired colour, wherein said one or more colour formulations is selected having regard to one or more of the following variables, in addition to the variable of colour information: (a) the identity of the polymer into which the colour formulation is to be incorporated; (b) the grade of polymer into which the colour formulation is to be incorporated; (c) the processing conditions to which the polymer into which the colour formulation is to be incorporated will be subjected; (d) the use and/or requirements of the part for which the colour formulation is to be selected; (e) country of use; (a) the identity of the polymer into which the colour formulation is to be incorporated; (b) the grade of polymer into which the colour formulation is to be incorporated; (c) the processing conditions to which the polymer into which the colour formulation is to be incorporated will be subjected; (d) the use and/or requirements of the part for which the colour formulation is to be selected; (e) country of use; (iv) delivery information relating to the colour formulation(s) determined in step (iii) to an assessment location for assessment; (v) optionally repeating step (iii) to determine one or more additional colour formulations for delivery into the polymeric material to match or closely match the desired colour; (vi) the selection of a colour formulation for use in the manufacture of the part; (vii) wherein the computing means in the second location communicates information relating to the amounts of base colour formulations to be dispensed by a colour dispense system, wherein information relating to the amounts of base colour formulations to be dispensed is communicated from a location which is remote from the colour dispense system and wherein said colour dispense system includes more than 10 base colour formulations; (viii) wherein the colour formulation is manufactured using said colour dispense system.