Done a lot of painting and modeling in my day, so we can cut straight to colors and methods. Bear in mind my paint collection is all citadel/gw.
I've gotten a second GR75 for... Reasons. I've done touch ups to all my other ships but not really sure how I want to do this one. I know I want it to look like the one in the background at MosEisly (ep4 remastered version) that was red rust covered. I don't try to go to out of my way on my X-wing stuff since the factory paint is mostly great. So minimal effort here is the goal. I like to think in normal circumstances that all I do for my X-wing stuff is 'finish what the factory started'.
My other transport all I did was put some shade running down the hull like rust run off and leakages from corners of protruding parts and some recess areas, whatever liked right. Brown stains as it is, it worked great just using Agrax Earth shade. Then I added some extra color to the cargo pods selectively and did the engines. Enough to bring it to life and give it just so slightly a different look to everyone else's.
So my current thinking for the new one is heavy dry brush the wall panels with like a reddish brown going for almost total coverage, layer paint select panels back to some grays like they've been replaced recently and others with darker muddy brown. Then 'rust' effect it with sponged on dark/bright red and blackish-brown? Something like that? Then I'll do something similar to the other one I have and color the engines and some different cargo pods.
If anyone is terribly familiar with rust scheme or for some ideas bounce em on me. I'm not confident in my path on this one yet.
Edited by ForceSensitiveSpelling of my gawd my auto type hates me kill me now.