I removed some ridges in some polymer furniture for a gun.. 

the removal of the ridges went great.. very happen with the outcome.. 

with that said it is now dull gray instead of black... before I hit it with rattle can.. does anyone know if there is a way to restore the stock color.. not looking for a pristine factory condition.. just close enough that it is passable.. if not I will just paint it.. no real issue.. 

I would try a little metal polish like Brasso and a soft cloth. restoring the shine should restore the black! Anyway, that's what I would try first!

NOVUS 7100 Plastic Polish Kit - 8 oz. https://www.amazon.com/dp/B002UCYRZU/ref=cm_sw_r_cp_api_SI1IAbGKNNZEM

works on motorcycles.... vroom vroom!

Get the stuff to restore the black bumpers on cars. Did it to the Ruger boat paddle stocks I have. Turned out great.  Took all the oxidation off the Zytel.

I’d  try meguiars plastic polish

2 minutes ago, Zeke said:

NOVUS 7100 Plastic Polish Kit - 8 oz. https://www.amazon.com/dp/B002UCYRZU/ref=cm_sw_r_cp_api_SI1IAbGKNNZEM

works on motorcycles.... vroom vroom!

Posted before I saw his, I agree.  Personally I’m a meguiars guy though.  They have a great plastic motorcycle polish

Just go shoot it. It will even out.

That's it Meguiar's ultimate black plastic restorer.  Could not think of the name of the stuff.

ty for the input!

Meguirs is magic. Use their stuff to clean plastic headlights as well.