The colors of the visual pigment chromophores.
D000375:Aging; D000818:Animals; D003116:Color; D003545:Cysteine / Q000494:pharmacology; D049832:Decapodiformes; D006863:Hydrogen-Ion Concentration; D008722:Methods; D008968:Molecular Conformation; D012168:Retinal Pigments
D012168:Retinal Pigments; D003545:Cysteine