it's a volkswagon monte carlo, lol! i wish i knew how to do this. i had a guy from the monte carlo/impala club done it. he took all the stock light out and solder the color of your choice led: blue, green, purple, red, white, or mix color. here's his web site i'm not sure if he will do the gp, but you can ask him. i think some where on his web site he have a write up.

BBEngineering