Thanks, I've found giving them 2 or 3 hour long baths during a shed helps a lot, even though people say you only need to increase the humidity.

The rock in the middle of the bath is a good idea.

I don't think it warrants a vet visit, its not like the scales have come off, its just some have gone a different colour.

Besides I'm just getting her back to normal, after she laid 6 parthenogenesis eggs, she lost about 1000g and she was restless for a week after that.
She's calmed down a bit and is staying in her hidebox mostly and has eaten 2 rats so far, so hopefully she will get her weight back up to 3kg or just under before October/November when she will go off feed.