Hello everyone. My whites tree frog Henry has always been Brown. But recently after I got a new cage for my frogs he started turning green? This change in color reveled a darker spot on him. In the center is a white spot. I guess I never noticed it because it was the same color as the rest of his body. But now it stands out since the rest of him is turning green. He is very healthy and never showed any issues. Is this a problem or just a natural thing?