I'm playing single player. I paint the vaults. I close the game. I reload the game. Now the vaults I dyed are back to undyed metal color. The name displayed on the outside of the vault still corresponds to the color I dyed the vault to, since the color of the displayed vault name changes with the dye applied. Nonetheless, the metal bits themselves are gray. If I dye them again, the color changes.

They don't always lose color upon reload. But they frequently do. I can't tell if the game crashing and then being reloaded is what causes the color loss, and then they just stay that way until I dye them again or if it's just happening at random.

I realize this is a petty issue compared to actual mechanics, but I took the time to dye the vaults and I would like them to be pretty and to stay that way.