My lizards tail got,caught on the door when I was closing it. I didn't close it really hard but about 1/5th of the end of his tail is now very dark green and it's in a constant curl at the end part that got damaged. When handling him after he did straighten it out completely so I don't think I broke it. Is the color of his tail going to change back after the blood leaves? Is it blood thats making it that color?