like, the 2008 Acura TL has Bi-Xenon HID Headlights and the 2009 Acura TSX has Xenon HID Headlights.
It has nothing to do with the color of the light!! Bi-Xenon are for cars that have the low beam and the high beam on the same bulb. That for cars like the Ford Mustang the newest one and like the Ford Ecosport or the Mazda Protege. Both have only one light bulb so they would need Bi-Xenon. And just Xenon HIDs are for cars that have separate high and low beams like a VW Golf or the Honda Accord. HID means High Intensity Discharge.
As for the color the graphic starts in red an goes to blue. Blue is for most intesity and red for less intensity. Thats why Xenon lights are sort of blueish and have their names HID.
In my personal opinion I would rather the Xenon HID because you have separate lamps and some of the you can graduate diferently and have a better vision than Bi-Xenon in which it both would depend on the same lamp angle.
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