This is an addition I plan to make to the MainHUD.Performancepanel.
Check it out and let me know if you like it.
r_flat_ambient=true/false
Doesn't appear to be a choice in our UI, but works REALLY well for those night time scenes in wide open areas.
Screenshots are taking with no torch in hand, at night.
EDIT: Fixed the fubar file, I dunno what happened to that. Changed the mod to only use the r_flat_ambient command. I was trying to go for a green type atmosphere earlier, but gave up on that. I think there is too much variance on peoples settings for that stuff. The r_flat_command should work nicely though. Better than sliding the gamma up and down in my opinion.