Just all him Camo Kai .

As far as color change, it's usually due to mood and temperature. A chameleon changes intensity , looks more pale or darker depending on mood or to communicate a threat , not to blend in. A female veiled chameleon will stay a light green when receptive to a male but will turn almost a chocolate brown with polka dots to say " stay away , I'm already mated + full of eggs."
Check out these magnificent panther chameleons, their colors are just to dazzle us , they can't blend in to anything.
At FL Chams we always try to have several different locales of Panther Chameleons for Sale. Panther Chameleons are one of the most sought after of all chameleons and a focus chameleon for us. Panther Chameleons are a very hardy chameleons and are beautiful as well. We have been breeding panther...
www.flchams.com
Now a master of camo in the lizard world would be some of the leaf tailed geckos, have a Google search of those guys ! Well here's one