I really don't have a want, or need, to put true hid lamps in the fogs, since I too get flashed for just using the regular hid lamps and the curent fogs... so that would be overkill. What I am looking for is a bulb that matches the color output of the hids instead of the nasty yellow that they currently are.
Gathering what I learned from your reply, I would assume that there are bulbs out there that could match that color, but with a lower khz rating that wouldn't be too much with the headlamps on as well.