All species of geckos have highly developed mimetic coloring. Most are brown-gray, black, or greenish brown with skin that resembles tree bark. We have 2 variants through which these geckos are camouflaged: the leaf shape and the bark shape. Some have developed a flap of skin along their body, known as a “dermal flap.” When they lie down against the trees during the day, it casts shadows and makes their outline practically invisible.