Yikes!!! I'm not a fan of that scheme on a GT3 or Boxster, but the GT3 can get away with it because it's way out race car sporty. It's kind of like trying to translate a super bold paint scheme on a rice rocket sport bike (it works) to something a little more conservative, like a "sporty" BMW bike (doesn't work). I'm not out in my car trying to attract attention, maybe your objective is different.
Your car looks great now, but if you're going to go with the green wheels and stripe along the side, might as well go all out with a GT3 front facia, aero skirts along the sides and back, and a huge faux carbon fiber fixed wing on the back.
No need to wonder what it will look like. Just saw this in the classifieds:
FS: Boxster S "RS" 2002
Photoshop it electric green.