Thanks Xoliul, makes more sense. The car, as you've seen in the bmw thread, is for my portfolio. I never thought of this. Using a mask for a shader. This sounds like a way to make multiple paint jobs if many copies of the car are to be on screen.
1A: Always do UV's, they affect tangents and thus normals, having bad UV's can lead to bad normals, which will not look good, ever. 1B: yes you should UV and unwrapm to a black an white mask, that way it becomes easier to pick different colors for the body and stripe, through the shader. 2: It's a tradeoff. Portability vs…