If a chameleon's naturally relaxed cells reflect blue, why do chilled-out chameleons typically have a green skin color like their surroundings? "Basically, when a chameleon is relaxed, they are ...

A calm chameleon, for example, may exhibit green, because the somewhat contracted yellow cells allow blue-reflected light to pass through. An angry chameleon may exhibit yellow, because the yellow ...

As the distance between the crystals increases, the reflected colors shift from blue to green to yellow to orange to red—a kaleidoscopic display that’s common among some panther chameleons as ...