Not much you can do about it, both of my coupes have gotten new N.O.S hood ornaments because of this problem. I've heard that in some cases you can pop the plastic off and repaint the wreath, but no matter how careful you are, it usually doesn't turn out authentic looking. Fortunately, it isn't too hard to find new emblems on eBay for great prices.
Now, I know that the older wheel center caps can be repainted and look original, because they don't have plastic, but beyond that, replacement is your best bet
