I've had my leopard frog for 2 wks. now and yesterday I brought in some of my garden pond plants (rooted cuttings, etc.) and used them to decorated his cage. They are mostly raroon in color and he changed from his med. light bronzy brown to a very dark brown with black spots, no light edging around spots. I have to look close to see them. Has anyone seen this in a leopard frog. I wonder if I can get him to go green with lots of green plants?