So last Saturday I got hit outside of my girlfriends house while my car was parked and the damage requires work to the side panel by the bumper on the driver side and a new bumper now I'm just seeing if I should just repair it and not paint the whole car or repaint it what is your guys opinion

 

what color is your car? some colors are much harder to match than others...usually a good body shop can do a pretty good job matching some of the more complex colors but the pearl/metallic finishes can be tricky and you may not be fully satisfied with the results...

 

Front or rear bumper? Either way you'll end up painting whole bumper and blending around to do it correct if you got comprehensive insurance just file claim.