linux gamma issues can be resolved (ish) as follows

xgamma -gamma 1.3 ;)

is there an in-game /Exec command? since whenever I toggle out of the game the skysphere goes "boom" (probably nvidia drivers fault)

"Yes. Collision damage isn't quite right, and it hasn't been for a long time. It's on our list."

How high on the list is it I am wondering?