Hmm, my little guy dumped his water dish the other night while I was sleeping then I looked at his humidity (65%) and thought, "jee, thats kinda high" then I noticed him sleeping under his SOAKING WET hide. I cleaned his tank up and dried everything but he did have an odd yellow tinge to his entire belly for a few days. It doesn't sound to be that same thing and I can't really tell by the photo, but as mentioned, keep him dry and the humidity around 50. My bp's belly is nice and white again. That sux about the vet bill though. well at least hes dewormed