My MDX is about 6 months olds and it just got its first customization (the pristine condition couldn't last forever). My next-door neighboor's kid apparents side-swiped the rear bumper on her bike. The impact removed a strip of paint about 1 inch long and 1/4 inch wide and left some hairline scratches. To repair, do I have to repaint the whole bumper and can I just touch up? Anyone know what the cost would be? Bonus points for a shop in the Boston area. Thanks all.