Color challenge thursday green ( CHAMELEONS )

So what is this that was my first question when i saw this kind of lizard its changing the color and i did some research a bout this.

What is chameleon can do

The ability to change color is their most intriguing feature. They have sharp claws, that enable them to have a firm grip while clinging onto branches or climbing trees

So heres a link to know more about the changing color lizard chameleons

https://www.optics4kids.org/home/content/what-is-optics/reflection/how-do-chameleon-s-change-color/