Bi-xenon bulb match
I just installed the Hoen Xenonmatch H11 bulbs (additional high beam with bi-xenon headlights), and they are a great match with the xenons. Even though the headlights are bi-xenons (meaning both low and high beams are xenon), an additional bulb illuminates when you turn the high beams on, and the stock bulb is yellow and doesn't match the xenon light. Turn on your high beams and take a look--the bottom half of the headlight is yellow. These are a great match:
http://www.hoen-usa.com/orderpage.htm
http://www.hoen-usa.com/orderpage.htm