The idea is that every visible inch of surface area on this motorcycle is black. I was hoping it would make a good distinguishing characteristic for this character; she tries to be a good comic book super hero and ends up being fairly derivitive for the first part of the book. I've done a little googling, and I don't think it would hurt, say, the exhaust pipe to be painted. On the other hand, it and the engine do get very hot, and I can't help but think there's a reason I've never seen it done. But I can't find it if there is.