Thanks for bearing w/ me, guys. T4, I think I now understand what you mean: One fabric, but when viewed from the right it's one color, and when viewed from the left it's another. Is that it?
PSG, NOBD, etc., Chan says that's their darkest green. And while they do have a darker blue, it's midnight blue.
I may pull a Foo here and still get the tan. But that may be a mistake. As mentioned above, I have been turned on to the contrast linings a bit. Here are my other coats from Chan w/ their linings: