Chanel Mysterious 601 Le Vernis ($27, Nordstrom.com) is a deep khaki military green. It's a full coverage cream. Although this is a very deep shade, there's a muted quality that prevents it from looking black on the fingers. I never thought I could love a khaki-green colored shade for the nails, but this one is quite polished and distinct looking on my fingers. Below shown with two coats.
Comparisons below to some Chanel and Dior:
My heart still belongs to Elixir from the fall collection, but Mysterious is a nice alternative to black, grey or vamps. I can't say that Mysterious is a must-have for me, mainly because I'm usually drawn to non-green/khaki shades for nail polish. I found Alchemie unique, but for some reason, I can't get excited about Mysterious. If you're on the fence and trying to decide between a few select items from fall, I would say skip Mysterious and go for one of the cream blushes or lipsticks in the collection. Those are the winners in my mind.
Right now, Chanel Fall 2013 has been spotted in stores early. I found mine at Nordstrom and Neiman Marcus. For now, the only place I can find it online is at Nordstrom.com.