I was wondering do cats coat colours patterns change in winter? I never noticed it with Tiggy but Riley had what I'd call ghost tabby markings when he was younger ie the tabby stripes/spots were a darker grey than his coat colour. I don't know if they've gone because he's got his adult coat now (they'll be 9 months on Monday) or because he's got a winter coat. You can still see a very faint markings in certain lights but for them ain he just looks grey.
I love him no matter what colour he is but here he is when he was younger...
One I just took of him.... no stripes
A recent one that shows very faint markings still