i would recommend going for the PIAA Ion Crystal H3 bulb. Although a bit expensive, they emit a brilliant yellow in the main part of the beam, with a bluish-white tinge at the fringes of the beam. As such, it is a dual-purpose lamp for my 190e: the yellow part that hits the road is good for nighttime and foul-weather visibility; the blue-white part of the beam at the fringes makes the foglamp perform like a daytime running lamp, from the point of view of other drivers. I am very satisfied with the purchase. Hard to source, though.