I'm working on getting some photos up the site won't let me upload and my laptops being fixed and im working off my iPod right now. Last night I gave him a thawed mouse he looked like he was backing away then lunged not only getting the mouse but the tongs and part of my thumb. He seems to act normal during and shortly after eating I'm also working on the temp range which I do think is the largest factor like you stated. Then humidity will be next on the list as with a partial bedding change. When I looked at his underbelly its a subtle greyish color with a small amount of pink near his groin.