To acchieve car color I did the following 1. Cut layer mask for the car 2. Duplicate the car layer and increase the color saturation to +85. This will make a rougher surface so I applied the surface blur filter to fix that, but as a result sone detail was lost. 3. To regain the detail decrease opacity of the bright color layer to 50%, and combine it with the original car layer. 4. Increase the contrast of the combined layer to achieve the desired look.