If you like the look of the carbon fiber side markers, a cheap alternative is to get the spray on smoking stuff. Not sure what it's called, but you should get the idea. You can put on as much or as little as you want to get it as dark or light as you want. I did my side markers and am happy with how it turned out.
Go to this link for some pics
http://students.washington.edu/mdh7381/impreza/my_car/