He's right, you can use Photoshop. However, since Photoshop is raster based it's not as simple as selecting you car and changing the color. you will have to use a seperate layer or cut out the section of the the car you want to change the color of and adjust that channel. Photoshop is a fairly complicated program that can do almost anything you want it to do. As long as you know how to do it. I use it alot and definitly would recommend it. A cheaper solution to the $699 photoshop program is build a model, more fun too!!!