My co-worker just asked me....is it a certain type that change color to blend in? So do they or don't they?
I once saw a Craigslist ad where a a very bad owner was selling a female flapnecked chameleon in a 5-10g tank with a plastic skull, night light, wood chips, and one small fake plastic plant. What was worse is that the person said, "she loves to he held and changes colors to match what she is on," the ad just sickened me.
Also, it wasn't until just a couple of years ago that people came to the conclusion that they dont change colors to match backgrounds...which is still slightly up in the air.