I can say from experience that painting a Ti-Book is a royal pain. I built and painted one a pearl yellow last year for my sister. masking was not the most fun ever.

As far as a carbon fiber look, I suppose its possible, but I dont know for sure. While auto shops are a good idea, you might hunt around for local custom airbrush artists. Someone with a good airbrush hand should be able to simulate carbon fiber.

As far as scratches go, make sure that whoever does your work clearcoats it with a good automotive clear. When polished, it'll be shiny, and should protect any artwork.
Electricity tastes good. No, seriously.