Originally Posted by lurks
No. It really depends on how well you have been keeping your paint. Properly washed, waxed, cared for - and it will be a perfect match. I got pre-painted front and rear bumpers after 2.5 yrs ownership (Mystic Blue) and it was a perfect match.
Sounds lucky. I have conflicting information. A very high end body shop that has German BMW certified mechanics and techs told me they always HAVE to spray on to bordering panels and reclear coat them as well. The problem is the very slight variation you get combined with a body line gap. Other pro body shop folks have told me the exact same story.