Xenon headlamps are a pure blue light. The most effecient xenon pulse at 120 times a second. Using xenon you will need to also use LPS or low pressure sodium lamps. they are a pure yellow light with 15% red do to the ir coating phillips in the netherlands puts on the end of the bulb to insulate them. lps is the most effecient lamp at 200 lumens per watt. 63 % lps lumens 36 % xenon lumens 1 % luck. Hope this helps

One love
c