This is off the top of my head. Please let me know what I've missed. Albino: Lacking pigment. Amelanistic: lacking melanin (black pigment). Aposematic: Warning coloration. Chromophores: Cells responsible for holding pigment. Xanthophores: produce yellow pigment. Erythrophores: produce red pigment. Melanophores: produce black pigment (melanin). Iridophores: Hold no color pigment but, hold highly reflective non-motile purine crystals that yield silver irridescent reflections. Leucophores: Hold no color pigment. Motile purine crystals produce white pigment. Cyanophores: produce blue pigment. Erythristic: Predominantly red morph. Flavistic: Sepia-toned background color. Leucistic: lacking or mostly lacking chromatophores. Not a true albino (ie: colored eyes). Melanistic: dark or near black (some markings can still be visible). Piebald: Having patches of white. Polymorphic: Having a natural variation within a single species. (eg: blue motoro ray is a polymorph of the standard non-blue motoro ray) Tyrosinase-Negative Albinism: An albino whose cells lack tyrosinase (enzyme that synthesizes melanin) yielding a pale-white to creamy animal with pink eyes. Tyrosinase-Positive Albinism: Synthesizes tyrosinase but, not melanin yielding a fawn or lavender (platinum) color. Xanthic: Predominantly yellow color morph.