Cool Blue high beams looked whiter than the Silver Star bulbs. My observation is based on actual experience...and your observation is based on experience or opinion? Of course, all of the bulbs I mentioned do "emit light"...so I don't understand your statement that Cool Blue bulbs don't "emit no light whats so ever".?? As far as Lumens, a lumen is a measurement of luminous flux and it is defined in terms of candela steradians (Candela multiplied by steradians. Appreciate your comments! Regards, Jim