To your original question, halogen bulbs are typically around 3000K. 2500K is getting into yellow ion territory. 4000K is getting to the blueish tint, but still alot of white. 5000-6000K is where you see more blue, with some purple tints. 5000K is considered close to daylight.xrunner2k6 said:alright, so i need to find out what our factory head lights color temp is. are they 4000K or what? thanks for the help ahead of time.