Maggie, my #1 torti is exceedingly bright, attentive and catches on to everything. Ditty, My #2 auxillary cat is also a torti and she's watching as I type this so she is very intelligent too.

Maggie, however, calls her "the Dittiot".

The place where I board my dogs when I do shows is also a cat rescue. I see all sorts of cats there. Relative to this discussion however, the most unusual cat they have there right now is a "calico" that is white (as usual), orange/ginger (as usual), but where the black patches would be are perfect patches of tabby grey, and if you could continue the tabby "stripes" they would match up from patch to patch -- in other words, she looks like a grey tabby(tiger stripe) that is wearing a calico coat with big holes in it.