That is correct, Rascaholic. And yep, absolutely possible Bridgertrot, I've always thought it would be pretty cool to have a chimera, even a 'normal' one color looking one. So it could be a bit more common than people think. :3
I remembered what that is called, on the zebra.
And, from the wiki page on it:
Leucism /ˈljuːsɪzəm/ is a condition characterized by reduced pigmentation in animals. Unlike albinism, it is caused by a reduction in all types of skin pigment, not just melanin.
There's more information on it about the interwebs too, I thought it was pretty cool.