Every animal has a color of its own. "Parrots are green, elephants are gray, pigs are pink." But chameleons change color wherever they go. "On lemons they are yellow. In the heather they are purple." One chameleon is not pleased with his changeable appearance. He thinks, "If I remain on a leaf, I shall be green forever, and so I too will have a color of my own." Of course, what he doesn't take into account is the changes wrought by autumn, and soon the green chameleon is yellow, then red, and