[Jeph]

Cars on the road appear to have blue lights when compared to all the other halogens out there. Halogens are actually
yellowish, and that yellow makes xenons appear blue. I assure you, they're quite close to white.

And it's the projectors that produce a tinge of a violet color, and that's usually on the edges of the beam pattern
(like curved/angled glass create a prism).

It's hard to tell from a digital picture real life results. And when it comes to light and cameras, there are a lot of
factors to consider (white balancing, color correction, position/angle, etc.)
Side note, did you know digital cameras can pick up light the human eye can't see? Look at your digital camera's screen while aiming
your TV remote at it (while pressing a button).

I will say this, the old Porsches did seem to have a greenish tint to me. Those were among the first xenons out there.

I find it funny that many of the vendors show what the lights look like head on. What should matter is how it illuminates
from within the car.