Mark -
Since my girl is arctic silver and I decided to paint the grills arctic silver as well. It became an easy decision to just paint that one dual-piece all the same color. It went with the theme I have of making as much silver as possible and removing all gold.
A short list -
Chrome silver, black and red crest on my steering wheel;
Chrome silver, black and red hood emblem;
Chrome Boxster S badge on the rear;
Chrome silver and back center caps (yes, I sold my colored embossed versions just to get rid of the gold).
Good luck with the final finishing and post pictures when you are done.
Andrew