Hey... a friend was asking me about one of his BPs recently. said he has developed a small discoloration on his head. I told him from what he was describing it was probably just left from the shed and should pass with the next. but after another shed it's not gone and he says it has steadily gotten bigger.. a lot bigger than it was when he first noticed. his temps/humidity have been good (89-91 warm side, 82-84 cool) 55% humidity. in a 60 gallon long enclosure. (little big for his size, but plenty of hides so he doesnt feel too open) anyway... here's a pic of the discoloration.. anyone have any idea if it's normal or something that should be looked at?