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I wouldn't call that a projector. Maybe who ever is selling them is labelling them as a projector, but just because it has a convex lens in front of the bulb I wouldn't call it a projector. Not a Euro lens either (if it was it would have an E-code on the lens). Just some poorly designed aftermarket housing. I'm sure it probably puts out a lot of light, but where is it putting the light?I design headlamps so if I am asking a bunch of questions or saying a bunch of stuff, don't take offense, I'm just accutely aware of all the poorly designed stuff that is out there.As to color temperature...the Photopic region (light adapted eye) is most sensitive around 555 nm wavelength which is a greenish color. The Scotopic (dark adapted eye) is most sensitive around 500 nm wavelength which is a shift towards the blue spectrum. There is a shift in the eye at night to using more of your cone receptors in your retina which are more responsive to blue light. Research has also shown that bluish light at night helps to reduce eye strain and fatigue; so you feel less tired while driving at night. We are not talking about those 'blue' halogen lights here, but rather higher color temperature bulbs that are shifted towards the blue spectrum.