You say "it won't be stock", so what will it be ? Day two? East Coast or West Coast style or something in between ? What colors do you like. Solids, Metallic, Candy, Pearls, or Metal Flake. Depending on what your doing, a Pearl white roof would look good with a darker color body, most colors would be darker wouldn't they. Maybe a darker color Pearl body. You might try a Metal Flake or metallic roof with a pearl body. Would a primer body be something you would want to try?