The previous owner of this car had hauled some stuff in the back and used the back bumper as a sliding rack or something...who knows what it was used for. Needless to say, it looked pretty bad.
So, on a nice sunny weekend and a can of standard gloss black auto paint from Autozone, some paint tape, sand paper, and filler, I spent about a half hour of work, a couple of hours of drying time, and the results are in these pics:
Another repair tip: I've found that if you have cracks in any of the plastic body pieces (as for instance from getting rear-ended by a Suburban), ABS plastic pipe cement does a good job of repairing them.
"So you would end up with cemented cracked paint?"
If it's in a visible area. If it's a simple crack, rather than being squashed or torn, you get a very thin black line. A bit of touch-up paint & sanding would probably take care of it.