Physics Explorer on Instagram: "Chameleons change their color through special cells in their skin called chromatophores and iridophores. Chromatophores contain different pigments like red, yellow, and brown, while iridophores have tiny crystals that reflect light. By expanding or contracting these cells, chameleons can mix pigments and control how light is reflected, which creates a wide range of colors. This ability is not just for camouflage; chameleons also use color changes to communicate em