Headlights - Black Crystal question

Any black color on either the lens or the reflector will reduce the output of light. That is simply science. The black look is an appearance gimmick — no more, no less.
Yeah bro, sorry I wasn't very clear about that it wasn't the lense that was black and that do I understand what the science is behind the color black absorbing light. It was the crystal surface in the back of the bulb that the manufacturer was claiming to be brighter than normal halogen bulbs. And that I was looking for someone who had actually tried these headlights out. Today, I finally found someone who did buy em... He said that the crystal reflective coating over the black part does cause the lights to shine extra bright just as the manufacturer claims, but.... and here's the kicker, only in certain places...And that it was extra bright, but a splotchy light beam/pattern making it impossible for the headlight to be adjusted up or down or even left or right. Apparently both high and low beams are blinding (in some spots/places) to oncoming traffic, or high up in the treetops, or down at the curbside next to the front of the car. In other words - they're a really bad idea. Even dangerous maybe. Thanks for taking the time write and share your thoughts on the subject - You're right - it's 100% an appearance gimmick.