solarizedDark, missing partner to my original "solarized"

Now that I use both versions of solarized, I've decided to implement solarized dark.

I didn't digg skwp since it added extra colours that were not in the palette, grabbing a bit too much of my attention during regular development.

Screenshots:

![](http://is.gd/0Yuyf7)

![](http://is.gd/UcvafC)