Fix Big Duo color scheme name.
Tweak comment coloring to be a little lighter/greyer.
Add a literate coffeescript key.
Add Sanakan color scheme.

This is essentially an inverted and tweaked Big Duo theme. It's meant
to be slightler less muted than Tubnil Bright. In a lot of ways, it's
closer to more traditional - I think - color schemes, though if you
thought I'd remove the background colors from entities, you were wrong.

Personally, I think the color scheme goes well with the FlatUI theme.