I have a 5 month old panther chameleon. I have had him for just over a month. I moved him two days ago into a new cage. I have noticed he has been eating crickets but he is turning a solid brown color starting today. I have never seen him this color before! He tends to spend a lot of time towards the bottom of the cage. If I pick him up and put him back underneath his heat lamps his colors slowly come back. Is something wrong with him?