The Michigan glasses are kinda strange. They started out with 24K lenses (at least for M-Frame), which is appropriate for the Maize and Blue, but somewhere along the line they switched over to plain old Black Iridium but still with the engraved block 'M'. The local Parisian still has quite a few Minutes and XX's with the Black lenses.
Yes, the frames are Navy, not Midnight. Navy is slightly lighter.
Here's my M-Frame. It's one of the few pairs in my collection that I never wear.
