Color models are generally used for car development, car interior color and material definition selection. When cars are sold, there are many versions, such as high level version, middle level version, and luxury version. The versions of the same model differ, but basically the differences are in power and interior trim. The low-level version of the model's interior is hard material, the high level version of the model's partial interior will be covered with soft, while the top Han luxury version of the model's interior is basically covered with soft cover. So the car design and development of the interior package color model will make several different colors, different materials, different processes, different surface treatment of the car interior color model.