BASH prompt with current directory and git repository branch/state in a different color for each terminal window.

randps1.py

#! /usr/bin/env python
"""Randomly colored, useful BASH prompt.

Put this on your PATH `chmod u+x` it, and add 

    export PS1=`randps1.py`

to your .bash_profile file.
"""
from random import choice 
colors = choice([1, 2]), 31 + choice(range(9))
print '\[\e[%d;%dm\]' % colors + '[\W]$(__git_ps1 "{%s}")\$\[\e[m\] '