(Optional) Day / Night Cycle

As the Title says a Optional Day / Night Cycle with potentially buildings lighting up at night creating a nice atmosphere and visuals,
Of course this Day / Night cycle couldnt be perfectly in sync with the days ingame as speeding up to 3x speed means 1 day a second, perhaps it could be synced to the 1x speed or slower and stay that way no matter what speed the player puts on.
(I Feel like this could be a nice thing to add for a future update when the main gameplay elements are finished and polishing is being done)

This innovation would improve the gaming experience and, most importantly, reduce eye fatigue from the game's color palette during long gaming sessions!