Replacing Burned Out HID Bulbs
Xenon HID bulbs have become more and more popular with car manufacturers due to their increased visibility and aesthetic appeal. Rather than the boring yellow halogen look, a Xenon HID bulb will give off a pure crisp white light which mimics natural daylight at a 4,300°K temperature.
With time, a Xenon HID bulb goes through something called color shifting which causes the output to become more white and slightly higher on the kelvin scale by changing the complexity of the electrodes. If you have a bulb that that has gone out and you need to replace it we highly recommend changing in pairs so that the output it similar.