How old is your bumper paint? If it's like most of ours, its reasonably ancient and has lost its gloss. Most importantly, in many cases, your bumper paint has lost some of its component color, making spot repairs unsightly.
If you want to try a spot repair, go to www.paintscratch.com and figure out your paint color or combination. Order a paint scratch repair kit from either paintscratch.com, Tower Paints or the "Stealership".
My suggestion though, would be to get both bumpers repainted at a a good body shop. When done right, they will now match your lower panels and you will be in love with your "S" all over again.
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