New clean theme - "Mefisto"

Hi
Just started using oh-my-zsh and couldn't find any theme that was clean and minimal (no rainbow colors, no 3 lines for prompt :D) and would
1) highlight root prompt
2) highlight host when on ssh
3) put any repository related info to right side prompt

So I ported my old prompt and here's what came out:

![screencap](http://farm8.staticflickr.com/7112/7118972869_7f4efd9878_c.jpg)