Would you like the option to Paint the Ceilings? Yea or Nay?

Definitely want to paint the ceilings, cant make a log cabin with white ceilings.

On the subject of roof and ceilings I've noticed a weirdness involving underground houses. If I am in an underground house with an open courtyard (basement with the ceiling removed, so no ground above there) that is covered with a glass roof, no ceiling obviously, if I'm in camera mode with all the walls up and everything, if I look up the glass roof should be visible and the sky above, but I just see black. Anyone else notice this?