They are white/clear.
spotlight and forelight.
200ft 10 ft
Runway edge lights are typically white and are used to delineate the edges of the runway during night operations or low visibility conditions. They may be green at the start of the runway, indicating the threshold, and red at the end, signaling the runway's end. In some cases, the lights can also be adjusted to different colors for specific operational needs, such as during construction or when the runway is closed.
Runway edge lights
Runway Lights was created in 2011.
Blue Lights on the Runway was created on 2009-02-20.
Leave the runway immediately
Leave the runway immediately
White: Probably because white is the brightest color (no colors are filtered out of white light) and the main runway lights are the most important lights for a pilot to see in bad weather. Blue: Probably because red is typically used as a warning color (and sometimes direction), and green is sometimes used to indicate direction, blue was available to use for taxiways and was not distracting.
Taxiway edge lights are typically blue in color. They are used to outline the edges of taxiways to help pilots navigate during low visibility conditions. In some cases, taxiway centerline lights may also be used, which are usually green.
White runway markings and yellow runway hold lines
Sure! You've got your taxi lights to use as headlights, so you can see the edges of the runway and not run off the sides or end of it. I wouldn't recommend landing on an unlit runway, though.