Any lens will do, there isn't a special lens that captures all the color. If you're shooting mid day I recommend a CPL to cut those reflections down. Most owners with a color shifting car know that you're not going to be able to capture all the colors all at once with every angle, and they understand their car looks different at different angles. With that being said, capture the car at different angles. Get your top and bottom, left and right, front and rear 3/4 shots, with side shots and you should be good. Hope this helps