Do airplanes or helicopters ever fly at night using only white navigation lights?
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.