Hey,
I have the blue (xenon white) bulbs in both the headlamps and the foglamps in my 98 Limited. I really like them, they do in fact have a bright white with blue-tinge like the BMWs, but are a little less..."vivid?". I have owned 3 sets of these bulbs, and have found out the following:
- The rainbow colored bulbs give off the color-change light, but provide very little actual night-lighting.
- The blue bulbs light up road signs like MAD! It's awesome!
- For some reason, the darker the blue color on the bulb, the whiter the light. This makes no sense, but I tried some bulbs that were really light blue, and they just looked like regular headlights.
- The blue headlights look a little funny when the headlights are off, because you can see the blue bulb in the headlight reflectors. It looks wierd, but you'll get over it.
- If you have plastic lenses, like the headlights are on my 98, don't get the higher wattage lights...they can actually MELT the lenses! Fortunatly, this didn't happen to me, but I have talked to people that melted their foglamps this way.
Hope that helps! If you would like, I can take some pics of my truck at night.