A nice little mod I figured out with my friend's '02 2.5 RS. What this does is it makes the front turn signals really orange, and the back ones white. It should work on a lot of cars that use orange colored turn signals in the back, and clear in the front.

We switched the front and back turn signal bulbs. We did however have to grind off a small knob on the metal part of the bulb so they would fit. Its pretty straigt forward, the bulbs just come out without having to take much apart.