I have also always had a love for blue-gray kitties. One day I'd love to have a Russian Blue (russian and blue! Adorable!) I featured a little gray kitty in my latest painting, Whiskers and Winifred which is now freshly listed in my etsy shop.
I'm partial to these stripedy gray kitties, obviously, because I have a muse on hand! Our cat, Annie, is a gray tabby, and what a lovey girl she is. Which is all the more impressive since she appeared in our yard a few years ago as a very fearful, nearly feral half-grown kitten. We spent a lot of time trying to coax her out of the bushes and it was a slow process to even get her to let us touch her. Fast forward now, and its practically impossible to garden without her going into full love-fest mode and wanting to rub you and love nibble on you while you try to weed or plant flowers. What a funny girl.