When purchasing an HID cpnversion kit, there are several color temperature to choose from. From low as 4,300k to 12,000k. Just to be on the safe side, its best to go with the 6,000k and anything below that to avoid getting pulled over. Its illegal to have colored lighting, you will definitely get pulled over. I personally picked the 4,300k for a factory look. The lower kelvins in temperature you go the more you can see at night and the higher you go the less you see. Having a brighter bulb does not mean that you can see better, it just means that its brighter.

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LEARN HOW TO INSTALL AN HID Conversion KIT