Originally Posted by propr'one
You can't actually see too much blue, but it has a nice tint to it (if you've ever seen TL's with HID's, i think those are like 5000-6000K in colour).
All OEM setups use 4300K, because it is the only one that makes sense.
Some look bluer because the projectors are longer. You are seeing dispersed light. No automaker would install 6000k stock, it just makes lighting worse and strains your eyes more for no real reason.