biochromen.

1944 D. L. Fox in Science 100 470/2 From the standpoint of the biochemist..concerned with the metabolic significance of natural coloring matters, the designation of these by a discriminating scientific term has long been desirable. In response to an inquiry, Dr. George M. Calhoun..suggested to the writer [in a personal communication, 1936] the descriptive and self-explanatory term biochrome, with an adjective biochromatic (biochromic is perhaps preferable), and a collective noun biochromy.

1954 Sci. News 34 91 [Porphyrins] probably serve in this role, as well as a biochrome, in insects.

2005 Animal Behaviour 69 757/2 Psittacofulvins are the rare class of red, orange and yellow biochromes found only in the feathers of parrots.

1944 D. L. Fox in Science 100 471/1 Our present understanding of the parts played by..biochromic compounds in the metabolic economy of organisms leaves much to be desired.

2001 Trends in Biotechnol. 19 324/3 It also provides extended descriptions of recent advances, for example in the use of biochromic membranes.

1979 D. L. Fox (title) Biochromy: natural coloration of living things.