Pretty much any color (within reason) looks great on a 40. Something to consider is selling the car later on. Lets face it some colors sell better then others. I recently had a salesman tell me my car's color (yellow / black) would be a hard color to sell to a buyer. Of course this could just be an attempt to get the car at a lower price but I believe this to be true to some extent. Gulf Colors on this car look great and sell well...they are also very common. Good Fortune in whatever you chose.