The xenon light itself is very bright, whittiesh/blueish looking... The angel eye is a round ring that wraps around the headlight, it lights up as well... 2001 was the first year the the angel eyes were offered, xenon lights have always being an option until the last few years which they were standard.
As to where to get it.. I don't think the dealer sells upgrade kits for our model year... or angel eyes alone. They will sell the full headlight assembly (including angel eyes but they will not fit your car).... I recommend buying them from bavauto.com... expensive, yes, but you will not be dissapointed.
Refer to the picture below for xenon headlights with angel eyes
Send me an email if you need additional info.