Yes, I noticed that his fur was much paler when I had to find the skin for his insulin Jabs. He was also bigger than my other cats & had big feet! 
we love cats, we used to have two, they lived to 15 and 19 years…now there are 4 who are neighbours cats, they come to our back door most morning for breakfast…
OK folks, all of you that hoped Mr Grey would stay with me seemed to have been hoping too well!
When I sit at my desk to use my PC, he sits by my feet and rolls over so I can tickle his tummy. He rubs his head on my legs in the hope that I will comb him, to help remove his winter coat. If I move to another room he follows me & rolls over again for attention!:surprised:
The only time he doesn’t want my company is if somebody comes to the house ( like deliveries or window cleaners) because he rushes out of the cat flap!
The only thing he likes more than me is a warm radiator & his cozy bed…between 8pm & 6am.
You may think that I get some sleep at that time, but you would be wrong, the other 3 cats then need 3 lots of medication and lots of playtime … which often means pulling long strings for them to chase.
Would I want to be without them…NO
Would I like to get some sleep…YES, that is why my sister has been living here for the past 4 months!