So here is the lay down. I have a veiled chameleon who is about 6 to 7 months old im not exactly sure. I used to have a 100 watt basking bulb in his cage about 8 or 9 inches away from his basking spot which i believe gave him around a 100 degree basking spot but im not sure. I Recently replaced it with a 60 watt household bulb thinking that might be a little more appropriate for him. However as soon as i did that i believe it was latter that day but it might have been the next day he started getting alot darker. He went from blue with green and yellow stripes to dark blue with dark green stripes and black spots. I think this happened because he turned darker to absorb more heat and he was lighter with the 100 watt bulb because it gave of more heat so he turns lighter. Does that sound about right?