Originally Posted by dykmankey
how do you get it so its yellow even when there not on
Well there's several ways. I have a deep fascination with yellow fogs so I'll try to break it down for you.
A Yellow bulb behind a clear lens will be somewhat yellow but it won't give you the deep yellow or a brilliant yellow you want.
A Yellow bulb in combination with a yellow lens or "film" like Lamin-X or Grafxpressions would definitely be damn yellow. The only problem with film is if the housing gets too hot from a high-wattage fog or the heat concentrated from an HID (even though it uses 35w) the film would melt and burn onto the lens which you probably wouldn't want to happen. I've heard of people only running their fogs while driving so the wind can cool the lens.
These next two methods require some retrofitting but you would like the results.
The Lexus Capsule:
To get one of the yellowest color outputs you can achieve, you would want a yellow halogen or HID paired with what's known as a Lexus Capsule. A Lexus Capsule is a yellow capsule that goes over the bulb to give it a very yellow look. It's perfect for people who want the yellow look at night but not the yellowish lens color by day.
The Lexus IS300 or ES300 Projector:
Another super yellow method is to pair a 3K HID with a Lexus fog projector. These have a yellow lens and in combination with a 3K HID will be yellow as f***!.