I just realized that it should be really dark at night when there is a new moon.
So it will be in 1.23. At new moon, if you have brightness set to 0, you won’t be able to see anything on the terrain at all. Completely black, unless there is artificial lighting. The same as at the bottom of the deepest cave :-)
First new moon only happens during the 8th night from the start of the game, and every 8 nights afterwards.
This is a tiny change, but if you check twitter, you know that I am working on something bigger that should take the game to the next level visually. Unless you have a slow device, in which case you are out of luck :-)