I bought a 4 month old male jackson about 3 weeks ago, he was doing great, even eat out of my hand, he was a realy vibrant green colour...in the last few days he doesn't seem to eat anymore and he has been sticking to a darker colour, almost black.....he still drinks when I mist him and seems to move around the cage. Any ideas what it could be, or how to treat him? I have a 100 gallon mesh cage with a UVA light 10.0, the setup has nurtured a veiled cham before my jackson, (I changed the basking temps and night temps of course). anyways any help would be good. oh and for food it's cricks and worms, but as mentioned neither seem to interest him anymore