I kept getting confused by the cigarette cartons littered around the place, looking just orangish/yellow enough - and definitely shiny enough - for me to mistake them as loot items, so upon searching for their texture to either recolor them or remove them entirely, I found that they actually have an unused blue texture for the cartons on the same texture sheet! A simple copy/paste operation and some alpha channel editing later, I've restored the unused texture as well as made the box no longer shine as if it's made of the most polished bits of metal ever.
Notes:
I also edited everything on that texture sheet to not be shiny, as they're paper or dirt textures and shouldn't be shiny at all.
Unfortunately, the cigarette butts often littered around the cartons are using a separate texture sheet, and as such will continue to be shiny until I find the texture they use. Any help on this front would be greatly appreciated!
Shove this bad boy right into your mod_overrides folder and enjoy not being confused by these nice blue paper cigarette cartons. Martini is a collaborator because they are cute.