A simple idea on modding 'rig for silent running' command

[Woof1701]

Concerning realism: why would you want to do that? Red light was used as a night illumination because red light is less visible through an open tower hatch than white or yellow light is. For underwater operation in order to save energy blue lights were used, because blue lightbulbs with less wattage than normal bulbs could be used to achive the approx same illumination.