It's water transfer printing. They can add any pattern to almost any surface. Most places have at least 10 different carbon patterns. If you can't find a shop locally, then there is hundreds of other places you can ship your parts to.
http://www.youtube.com/watch?v=EmcdGmYexd8[/media]
http://www.youtube.com/watch?v=MN4PS7ZJeYY[/media]
youtube.com/watch?v=iP7BKHU4WUc