Don't feel too strange abut making a quilt for the cat. I made two "cat mats" for our Spooky, because he was leaving black hair all over the place. He liked them a lot, right up until he realized we really, really wanted him to sleep on them. Now I can't get him anywhere near them. That's a cat for ya!
I have seen a truly awesome all-blue quilt here, as someone's avatar. Wish I could remember who it is. I can't wait to see what you come up with!