I was all about color matched lighting in the past, but after actually using yellow fog bulbs I've changed. When the fogs match the headlight you can hardly tell that they're on. With yellow (or probably any other color) you can clearly see the seperate, low, wide foglight pattern as opposed to just blending with the headlights. It may or may not help as far as vision, but at least I "know" my fogs are turned on now.
"We LOVE rims boy... A brotha will put rims on a toaster if you let him!"
- Chris Rock
"I drive an xB.... No, not that one, the boxy one."