I know everyone thinks they need BLUE lights. But did you know the hardest color to see for the eye is BLUE!! Seriously, I want to take a shotgun or baseball bat to headlights when people put HIDS into old style housings or reflector housings never designed for them. The glare is seriously ridiculous. You only got flashed once so far?
That said, I bought some aftermarket housings for my Neon, projector low beam and reflector highs. I am going to do a HID conversion in the projectors. 5000k. I don't want color, I want OUTPUT. I'm also putting 70W or better bulbs for the highs, and will use a relay harness to keep my OEM harness intact.
I'm also doing the 9004-9007 swap in my Jeep grand Cherokee, but am getting some junkyard housings to do a HID projector retro-fit. I work in the desert and its damned dark during the winters.
All I'm saying is, I like light at night, but I want to keep Johnny Law off my butt too. Just putting higher wattage bulbs in can be illegal in most states. Some states its illegal to have HIDs if they didn't come that way when new.