Customizing your car to be in the colors of a stormtrooper(ref. starwars), those colors are white and black.
Usually you can stormtroop cars that have a white paintjob by adding black accents(wheels, vinyl, tint, etc.), or painting white accent parts of your vehicle black(painting side mouldings black).
"Did you just see that stormtrooped tahoe ridin diry!?"