I was away last weekend and when i got home i noticed a green blotch on my whites tree frog. My whites is almost always green but this time he was brown. During the next few days he turned green again and the blotch was brown. The temp is 83 during the day, humidity 60-65%. He is moving around and eating. Has anyone seen this before? If it is skin should i try and remove it? i don't want it to get infected or anything.