A well-done theme. I would like to see a little more contrast between the different outline/nesting levels of the Properties panel. Beyond that, this is quite good for daily use.
I love the fact that the 3D space is totally free of haze, so the geometry stands out against the dark background. It's like watching an object in deep space!
It also makes the Interface controls stand out with the highest-possible contrast.
Great theme. My only suggestion is make the wireframe stuff a lighter color. It's really hard to see the black against the dark viewport.