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How do Chameleon's Change Color? Chameleons exhibit remarkable optical phenomena. A chameleonâs skin can quickly and dramatically change color, its eyes allow it to look in almost all directions without moving its head, and it even has a rudimentary third eye! More than 100 species of true chameleons exist. They are found in Africa, Madagascar, Spain, southern Europe, Arabia, India, Sri Lanka, and the Seychelles Islands. Several color-changing lizards in the United States, commonly called anoles, are also popularly called chameleons.
These robust lizards have keeled, pointed scales. Background color is usually subdued gray, tan, or blue with a striking wide, purple stripe down the back and single yellow scales scattered on the sides (S. magister), or scattered turquoise scales mixed with tan and brown on the back and sides (S. clarkii).ike many other lizards, spiny lizards exhibit metachromatism, which is color change as a function of temperature. When it is cooler, colors are much darker than when the temperature is high. Darker colors increase the amount of heat absorbed from the sun and lighter colors reflect solar radiation.