What creates the colorful cutoff band?
It is the edge of the cutoff shield that creates the colors in the cutoff band, not the bulb. It does not matter if bulb is 3500K or 7000K, halogen or HID. The curved lens only amplifies the colors. In standard configurations, most projector units has a yellow/orange cutoff when distance to screen (=wall) is close. At longer distances, the blue color band gets appearant and sometimes even deeper in color. This would be the view that most people whatch when meeting cars with OEM HID. The colorful cutoff band is probably what started the demand for blue bulbs in late 1990’s.
