Dents in the bumper push out with minimal effort. Get a hairdryer or heat gun, warm it up for a minutes (not so close as to discolor the paint), push dent out from inside the bumper. If it's a hot sunny day, you can park it in the sun instead which will get it warm enough. I have pushed out a couple this way.
For paint, I would start with what Talon suggested. You'd be surprised what buffing/polishing will do. If you are that worried about paint match and need to paint it, order some color code specific paint online from one of the various places that make it to order. You could be looking good as new for $50 if you need to buy paint and a hairdryer.