This mod by Strikor corrects the night vision upgrade error found when you try to upgrade certain armor suits' night vision and it doesn't work.
Nightvision Upgrade Fix by Strikor
All outfits in Clear Sky can either add night vision or upgrade existing goggles. Unfortunately, GSC gave four of these outfits the wrong upgrade values. For example, the Berill-5M armored suit comes with low-quality (green) night vision. "Upgrading" it at a mechanic would give you the same quality. This mod corrects this issue by giving the affected suits high-quality (blue) night vision when upgraded. Prices are unchanged due to being a first-tier upgrade.
To install, simply extract the gamedata folder to your Clear Sky directory. If you haven't already, open up fsgame.ltx in the same directory with Notepad and make sure
$game_data$ = false| true| $fs_root$| gamedata
is set to
$game_data$ = true| true| $fs_root$| gamedata
PS5-M "Universal Protection"
CS-1 body armor
"Guardian of Freedom" suit
Berill-5M armored suit
Please include credit to me if you use this mod in your own work.