increase the night/the darkness, add moonlight, boost night owl

[Bobisme]

at night you can see well enough, the only downside is  - # in the dark

possibly I'd like it dark enough where you need a night owl as a spotter..
I'd like to see a pawn say 'it is to dark to work, i can't see' get those torches lit..
A high shooting penalty when shooting in the dark, (may already exist? ) unless a spotter/night owl is within say 10 tiles..  less of a penalty
I'd like to see the ground bathed in moon light
Night owls get to 'see in the dark' ...tunnelworld illuminator