Jonathan said:
For those considering going HID (and I do support this as a worthwhile modification), make sure you select a 4200K bulb. Why you ask? Read and learn:
http://www.solux.net/edu13.htm
Skip down to "Human Eye" and "Chromatic Adaptation" if you aren't a speed reader. The 'cool' bulbs at 7000-8000K are vitrually useless. Generic Phillips kits are available at around $400, group buys can go as low as $300. Someone be a guinea pig please.
I'm going to have to say, thats a no dice. 4200/4300 appear yellowish, and nasty to me.
Stay away from 5000k aswell, they're just 4200k bulbs with a blue coating.
http://www.performance-cafe.com/AutolitesHID.htm
If your going to buy HID's go for 6000k and be prepared to spend $400-800
Heres an idea of the color, its a crappy GTI

just kidding I admit it I am a whortexer
http://forums.vwvortex.com/zerothread?id=568638