I put a pair of H1 sylvania silverstars in the fog light positions for my 06 projectors, and they are a close match when warmed up.. They're not a perfect match - the silverstars are a little yellower - but it's close enough. I'm running stock 06 projector low beam bulbs.

I would like to find some city lights that are more significantly blue though. The ones I have - I think they're piaa plasma? - they're still yellower than the lowbeams. I'd like to have it add more of a blue accent to the fog light area... Any suggestions?

 

I hafta say that the silverstars don't really look yellower per se... but the stock D2Rs look bluer. It's like a very light blue and a white next to each other.