What would be the best product(s) and method(s) for me to use to remove scratches from the plastic "wood grain" interior trim and silver bezel around my gear shift? There's really no way for me to test it in an inconspicuous spot, so I'd have to be pretty sure it wouldn't just make the scratches worse. I want to make it look new again! 
Here's a pic of the interior piece I'm talking about but not of my own car. This one is in better shape.


Here's a pic of the interior piece I'm talking about but not of my own car. This one is in better shape.
