Make night version of this theme

[nikitavoloboev]

It would be really awesome if you could make a nice night version of this theme. I know you can change the color of the background but I found it to not be enough and I had to edit many other things just so it worked.

Would be nice to create a config option to make the theme go dark.

[trmendes]

I would love to see a dark version of this theme too :) \o/