Getting the business shirt to look like the film can be achieved with paint, I plan on doing it as soon as I get my TF figure. DarkArtist was kind enough to share with me his technique for weathering clothes and it works really nicely.
What I do is add paint to a small cup of water to basically make dirty water in whatever color I want, then take a brush and wet the parts you want to change. It's subtle but really makes things looks sharp, but has a better look than what I imagine straight paint would do. I just recently did this to my Indy custom shirt.
You can see here I added blood staining and dirtying to the shirt as well as tainting the overall color from a slightly off white to greyish brown.
What I do is add paint to a small cup of water to basically make dirty water in whatever color I want, then take a brush and wet the parts you want to change. It's subtle but really makes things looks sharp, but has a better look than what I imagine straight paint would do. I just recently did this to my Indy custom shirt.
You can see here I added blood staining and dirtying to the shirt as well as tainting the overall color from a slightly off white to greyish brown.