I just joined so I could add some pictures for you.
The Science of Star Wars exhibit is currently at the Science Museum of Minnesota and I just took a few pictures of the TIE they have there. I honestly can't remember which film it was from, but the pictures may help.
If you'd like, I'm planning on going back again. If you need better pictures, let me know. I could also bring along a gray card so I could get the best color.