Hi! I've searched a bunch and looked at lots of photos, but I am still a little concerned about my beardie. He is about 7 months old and lives alone in his cage. He is very active and doesn't seem sick at all. His eyes do not seem sunken in or anything, but I just started noticing a yellow cast to his beard. I am not sure if this is normal color changes or the early stages of yellow fungus. Thanks so much for any help.