This is a simple theme I'm using with oh-my-zsh which is loosely based on the theme "ys".

To install the theme wget the jcl.zsh-theme file into ~/.oh-my-zsh/themes.

$ cd ~/.oh-my-zsh/themes && wget https://raw.github.com/jasonlewis/jcl-zsh-theme/master/jcl.zsh-theme

Then set ZSH_THEME to jcl in ~/.zshrc.