Unsolved How to make a wheel paintable as "Paint 2" or "Paint 3"

How do I make a wheel paintable, but with the "Paint 2" or "Paint 3" option?

Because the "Paint 1" option will obviously make it be the same color as the car.

 

Whatever image it is in the PaletteColor, change it for a full green or full blue image.

Red= Paint 1
Green= Paint 2
Blue= Paint 3

 

Thank you.