Just though I said that, I do not think it's in the list of properties but maybe it's quick to do.
Copy pasted from the volcano shader by renaming CityLights, added
Code: Select all
CityLightsColor
CityLightsBright //instead of CityLightsTemp
In short, only SpaceEngineer will have the answer and
we will wait, unless it is planned to make mods that add functionality

Other people tested this method and parameters to suggest/share ?