My car never had a rear trunklid emblem (says: legacy L awd), so in order to be left alone by chain controls i had stuck a red one off a wagon on my car. This thing looked out of place, so 2 years later i picked up the correct one. Unfortunately, i scuffed the silver backing with my knife removing it. Here's how i fixed it, or you could make your emblem black or sti pink or whatever you want.
1) take the emblem, and pull all the foam off by rubbing.
2) Go to your subaru dealership and order "50 grit sidewalk" subaru part# 245745767.
3) rub back of emblem gently on sidewalk gently until silver is gone. The raised chrome lettering will be unaffected.

4) Hit with a good douse of clearcoat to smooth out backing.

5) paint your desired color. I was thinking of leaving it clear, but opted against it and made it silver again.

6) silicon glue (rubber cement, superglue) emblem back.
Car has less turbo lag, and i can tell its faster because i hit 50mph at only 2400rpms now.