Atomic Purple, no question. Shows off the knit pattern well (which, IMHO: Lunar 1 knit > Lunar 2 knit) and the speckled sole sets them off. Grand Purps are forgettable.
Received 2 of my obsidians in medium, but unfortunately my first foray into the world of Tech Fleece is no good as they fit too big.
If anybody has a size small obsidian and want to size up, PM me.
Otherwise, I'm open for a small grey or black 1.0 or dark charcoal.