Not yellow. White, long-haired Persian (think James Bond villain). Poor thing doesn't know if she is carrying a dingleberry on her pants or not. Where it falls is totally random. We are thinking of installing red and black numbered tiles on the floor and taking bets.
Combine that with the hairballs, and it's the gift that keeps on giving! Meow.
LOL - Ours is yellow, short-haired and bulemic. We now feed her alone in the pantry where uh-ohs don't happen. If I let her out too soon she finds a nice clean spot behind the TV or under the couch to let fly. Yeesh.