https://mwomercs.com/forums/topic/273645-mwo-settings-guide-and-usercfg/ Reposting this for interested parties. Not my work. But it might help you or a friend.
You can create a View for the User Table and use UserID security for this View to update the table. Read Security Settings -> UserID Security in help file for more detail.
Try changing the gamma to 0.5 of lower to actually see mechs on white or foggy gray maps. Back up higher for night maps. Thanks to LurmGod.. When from unable to see to being able to pick out that mechs had different camo at longer ranges. Might have had a few other settings set to low.