I talked to the pet shop lady and she said that I should change my UVB light every four to six months because it won't give out UVB heat anymore. So you may need a new one.
No it's kinda black it looks dirty I cleaned it but it's like black a scab or something. He's in the ending process of shedding as well. Around his foot it won't change colour. It just has that dirty tint to it.