If you are running HIDs in the fogs, the correct way to go is 3000k. Also only do 35w as a 55w would heat up too much in that small housing. Not a lot of people have it, but I strongly recommend the wiring harness for an HID kit. its an extra $15, but it will charge the ballast faster and won't risk frying the stock wiring. I used to run 35w 6000k in my lows and fogs and I loved it, but ended up switching to a different setup because the fog housing was cracked and leaking.
Here is my original setup:
