So I got the Midnight Blue band but the blue is so subdued that it sometimes looks black. Perhaps some like this but I wish it was a bit lighter, and now I'm considering the other blue band.
Im retracting my previous statement in this thread in which I stated dislike for the nike bands. I tried the Obsidian/Black at the Apple store and I loved it so much I bought it. Maybe it was just the other colors that made them look bad to me. But I love this one.