HID xenon lights are a great choice for your car or truck's headlights. They require less power than other types of light. HID xenon lights are classified by the color of light. To get a light with the best color for visibility, look for one that produces a temperature of 4000 to 6000 kelvins. It would be a good idea to replace your HID xenon headlights regularly to prevent them from burning out when you need them the most. Not only will driving without headlights put you and you passengers in danger, it could result in a costly ticket.