The only thing that I have ever thought I noticed with Hermes...my albino checkered, is that his pupils look smaller before a shed and his face looks crackly. On Possum, my snow, I can see folds in his skin when he is about to shed. If I can try to catch them before their next shed...I'll post pics. I couldn't see any noticeable difference in Little Joe, my albino parietalis, at all. He just hides more.