i have a pair of 10k Hids. the xenon with a halogen bulb for my his. but they are messed up one is blue and the other it white with a very small hint of purple.

if i was to buy just the 10k bulb would everything still work? and could i buy a bi xenon?

 

Who did you buy the kit from? It's very hard to just buy a bulb and get a good match on color. And no, you can't buy a bi-xenon bulb and put it in if you don't have a bi-xenon kit. You'd still be missing the controller. I would just bite the bullet and buy a nice set of bi-xenon HIDs. Frankensteining a kit together will just cause headaches.