Hi, I have a deaf British Short hair kitten (approx 9months) who normally has pure all white fur. I have noticed today that she seems to have some slightly darker patches of fur appearing on her body and legs. Is this normal or indicative of an underlying problem or health issue. I have noticed also that she has been off her food today and has committed twice although she otherwise seems fine and not in any discomfort. I am someone may be able to shed any light on what is causing the fur colour change?