I have the 4000K kit installed. I like the color. It makes painted lines and signs really stand out. Also, the projector lamps really look cool with HID bulbs. Likes like two blue diamonds. The color of the 4000K is the same that you will find on most OEM HID lights including Acura's. I've heard that the 6000K are more purple and that they acutally emit less visible light. I bought the upgrade not only for looks but more importaintly for better visibility. For me 4000K is a better choice. Either way, the bulb is the only part of the kit that is different. You can always change them later.
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keep the shiny side up
MikeC 01 #46