Chameleon Chromatics: How They Change Color and Why

Chameleons change color using specialized cells called iridophores, which contain pigments and nanocrystals that reflect light. The color change is achieved by altering the density of these cells. Chameleons use color change for camouflage, communication, and temperature regulation. The process involves different skin layers, each contributing to the color spectrum. The evolution of this ability is complex and fascinating, showcasing the intricate ways animals adapt to their environment.

What are the different layers of cells in a chameleon's skin and their functions?

Describe the process by which a chameleon changes its color when excited.