well... there are many types of brands for this bulb..
i use the HYBRID ULTRA WHITE in my head lights..matches well with the XENON gas..
for more of a blue.. Look into PIAA, for their plasma blue mini wedge..
OR, u can also use the HYBRID BLUE..it is a light blue and not a deep blue..that will fit with the head lights as well..
DONT GO TOOO BLUE... COPS ARE looking for anything to pull over and guy that drives a nice car..so be CAREFUL!!!!