I recently got a veiled cham. Appx 5 month old female from pet store. her set up is the basic starterkit from pet smart with the mesh and two bulbs. We put some sticks and fake leaves along with a motorized water dripping leaf for her. I live in San Diego so the temps are pretty mild but we still leave the bulb on at night because it gets a little chilled at. I have heard some people say that it's OK to let her get colder at night unless you live in a place that gets below 50s. Mainly concerned because my girlfriend says the lizard is looking much darker in the morning. For the time we have had her she has gotten much more comfortable walking around and letting us picker her up so it does not seem like stress. Could it be temperature related or might it be something else?