After ten years, one of the factory HID bulbs in my car began to turn "pink", and I am sure the other one was not giving 100% light output since HIDs fade with age. Instead of going with the factory 4500K color bulbs, I decided I wanted something more white, closer to how modern LED headlights appear, but without looking blue. I chose these in the 6000K color offering.Bulbs on modern cars are not easy to replace, and HIDs are especially difficult. Of course this is not the fault of the bulb manuSee full review