Chromatophore
Just because its so friggin cool...here is a movie of the chromatophore behaviour of an octopus. What a great camoflage! Invertebrate pigment-bearing cells were first described as chromoforo in an Italian science journal in 1819.[1] The term chromatophore was adopted later as the name for pigment bearing cells derived from the neural crest of cold-blooded vertebrates and cephalopods. The word itself comes from the Greek words khrōma (χρωμα) meaning "colour," and phoros (φορος) meaning "bearing". In contrast, the word chromatocyte (cyte or κυτε being Greek for "cell") was adopted for the cells responsible for colour found in birds and mammals. Only one such cell type, the melanocyte, has been identified in these animals.
Comments
And also thanks for the reference about chromatophore term!