I'm making some dirty skins for the cars! They will also include stuff like dirty interiors and glass, which I guess are the main points of this mod. Right now, it's still very WIP. I might find myself changing some of the textures along the way, generally making them higher quality. Also, I have no clue how to make skins colorable and I've quit bothering with that. Here's some of my fav so far :
Yo make the pigeon asswell! It will be cool to see a dirty pigeon. And oh! I saw your rusty skins and if you can or want you can add the pigeon too!
https://www.beamng.com/resources/skin-helper.15037/ Perhaps this will help you solve the problem with paintable skins.
Sorry guys I was on vacation until now, but yeah, I have made the skin for the I-Series aswell. Sadly, the new update changed some stuff regarding its glass textures, and my textures don't work properly anymore. It's gonna have to wait until I figure out how to fix it.
An update : Honestly, I was kinda giving up on the mod but I decided to get to work again. I'm remaking the skin for the caravan and I'll be remaking a lot of the other skins. For now, I've decided to keep the Moonhawk, Wigeon, Picollina, Burnside, Covet and Legran. I will be working on the rest of the default cars. Just keep in mind that some of them have textures in the "common" archive, which makes my work harder. Those cars include the D-series and H-series, which would be great candidates for this mod, so I will be working on making those work. If anybody wants to help me, add me on discord and I'll gladly take your help (same user, posopop11). Most of the engine textures are also contained in there, and I'd love to make those dirty aswell. I could also use help with the interior glass textures. I haven't managed to make dirty int glass textures for all the cars, like the Picollina or Moonhawk.
I think this is a great idea, your photos that you showed have great potential and I think if you finish it it will be one of the better and interesting modifications.