Hmmm. I have a light colored tortoiseshell who literally looks pink in the sunlight... hence her name, "Pink." (She's actually light gray and light orange with a little bit of cream on the tips.) She is VERY bright -- but also doesn't like other cats, dogs, or any minor changes in her life. She wants one slave, and one regular slave only, but humans are welcome to visit and she almost always sleeps on top of anyone who stays over for the night.

Of course, if she can be on top of a human, that's generally where you'll find her.

On the other hand, I have a friend with a feral cat colony he fixes and sometimes feeds, and an ancient retired seeing eye dog. Some of the wild cats will nap curled up with the big dog outside, but won't let humans anywhere near them.

Did you ever notice, the color goes all the way down including the skin? Very odd. That's what made me think about color and genetics...