Definition of colour change in US English:

colour change

(US color change)

noun

  • A change in colour; (Zoology) the alteration in the colour of an animal's coat, skin, plumage, etc., either for camouflage (especially in response to change in the surroundings) or as a signal to others (e.g. as a warning, a cue for mating, etc.).

Origin

Mid 16th century; earliest use found in Thomas Nuce (c1545–1617), poet and translator.