Quote Originally Posted by blaze View Post
Alright because yesterday almost all day he was like almost a green ish brown color.. When the sun was shining i opend the curten and then he was in the sun and turned a BRIGHT lime green color
The colour change is normal as Eric noted. Mine is generally some shade of green in the day and can head to a dark olive brown at night. In my albums you can find one for my American Green treefrog and a few of the shades I've seen him in.

Make sure that the sun isn't capable of heating his vivarium up to unhappy levels.