jtloper says:
Professor Charles Xavier:" Heterochromia was in reference to your eyes which I have to say are stunning. One green, one blue. It's a mutation. It's a very groovy mutation. I've got news for you, Snowball. You are a mutant."
Sorry I could not resist :)
The pure, almost albino white, is very cool as well.
jtloper says:
My joke about the guy (to paraphrase harry potter) It's either a very large cat or quite a small tiger :) even has similar coloration to Crookshanks.