TireRack is my best friend.
Yep, been spending way too much time looking at wheel and tire options on tire rack
. I've also been researching 17" vs 18" wheels (esp in the ICE Focus owners forms) and I may just stay with 17" wheels (but in black). I've found a set of black OZ wheels I really like, but they aren't cheap. However, the 17" version is only 16.9lbs, which might help with all the stop and go in my typical driving. Decisions, decisions.
Oh, in case anyone else out there is considering how different colored wheels (or trim) might look, you should check out Plasti Dip in a spray can. Tons of videos on Youtube about how to paint your wheels/trim/etc with this stuff. Looks very professional, and if you don't like it you can just peal it off with no damage to your original finish. Not a permanent solution, but seems to hold up well and is a cheap and easy way to check out color changes.