What about sanding on a single stage paint, like acrylic urethane? I repainted a mirror on a Buick a couple weeks ago. It had some orange peel, but I didn't do any color sanding because of the metallic in the paint. I didn't want to flatten the metallic.
Could I have color sanded? What if I use a straight color with no metallic? I'm getting ready to paint my VW Beetle, and don't know if I want to use base clear or AU. Any input??