How does a chameleon determine what color to change to?

So, this is a multipart answer. Color change in chameleons is determined by a few factors, but none of which depend on the color the chameleon is standing on. So the classic example of a chameleon that turns purple to match a pair of purple sunglasses is completely and utterly false. read more

Color change in chameleons is determined by a few factors, but none of which depend on the color the chameleon is standing on. So the classic example of a chameleon that turns purple to match a pair of purple sunglasses is completely and utterly false. read more

Veiled chameleons in moods of excitement or stimulation usually take on brighter and paler coloring. With veiled chameleons in excited moods, you might notice, as an example, quick shifts in color ranging from deep, dull green to practically neon green. If a veiled chameleon's coloring is muted and dark, he might be feeling placid and calm. read more

In fact, chameleons mostly change color to regulate their temperatures or to signal their intentions to other chameleons. Chameleons are famous for their quick color-changing abilities. It's a common misperception that they do this to camouflage themselves against a background. read more