There are a lot of different ways to skin this cat, but I think you have to follow the body lines. The sides have pretty complex shapes, If you follow the wheel arches, run it down the side, then to the back wheel arches, you would then have to wrap it around the back bumper to the other side. You could even bring the color up the center rear plate and wing section if you like.

Pearl or even a matte paint could be interesting? Are you thinking subtle or "pimp my ride" look?