In Star Trek we typically see many exterior space shots of starships, like the Enterprise-D pictured below, where some windows are illuminated and some are dark (see yellow highlights). Up until halfway through Voyager most of these starships shots were done with physical models having physical internal lights, and in my memory the state of the window lights always remained static during those shots. (For obvious budget and TV image quality reasons)
Do we ever see an exterior shot of a physical starship model where the light behind a window switches on or off, or e.g. changes color? Because, hey, at some point somebody must've wanted to go to sleep or was done using the bathroom while 'the camera was on'.