Black faced? I'm not sure they make those.
Blank faced, and doubled backed, cards, however, could easily be made. You just have to split the cards, and put together the backs/faces that you want.
Martini has a DVD out, and there are other sources out there, as well. In fact, if you use the search feature, there may have been some other threads right here on T11 that mention those other sources (I remember seeing them...).
Good luck!
(PS, this should probably be in the Product Questions forum)