Arriving tomorrow afternoon. That is exciting. Sounds like a good excuse to take an afternoon off work.
As for the wood finishes, I am now confused. The wood options are Walnut, Sapele, and Maple. Since Maple is very light, I am assuming the two woods shown in Clayton's above photo are Walnut and Sapele. I am thinking that Walnut is darker than Sapele, so to me the far left M5 pair and the bigger pair of M3's in the back are Walnut (and the lighter 3 pairs of M5's are Sapele).
Let us know when you open them tomorrow which ones your look like in the photo. The darker ones or the more medium tone ones.
...and first impressions as well.