This mod simply changes those bright white jackets/shirts with grey - more realistic... I think. at least.
1. Go to SteamLibrary/steamapps/common/SovietRepublic/media_soviet/worker
2. Create a new folder called "Originals". This is your backup so you can return to white jackets if you wish.
3. Move the file called "worker1.dds" to that folder
4. Replace the moved "worker1.dds" with the the modded "worker1.dds file"
5. Play the game.
Uninstall - Replace the mod "worker1.dds file with the original you put in the "Originals" folder.