The first actually called cunt coloring book, but I would never put cunt in a title. EVER. Trashed enthusiast Brit sent this over a while ago and I forgot about it til just now. You can print a couple and hand them out at your next family reunion! You can preview a few pages here.
Secondly, we have Gangster coloring books, which have been pulled from shelves and are rather hard to find now. You can preview it here.