I've been trying to figure out if airplanes or helicopters ever fly at night with only white Nav Lights.
See this UAV video taken on July 12, 2015, 05:38 AM Pacific time in San Francisco, CA, USA.
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There are no such things as white navigation lights - nav light, by definition, are red/green/white.
However, we're talking about filming lights at night. And the problem here is that the light source, no matter what colour, is a concentrated source of light in major contrast to the lack of light around it. And so the light will often 'burn in' on a camera and appear to be a lot of light, ie white, where the human eye will pick up the colours.