Colores para git y versiones de ruby en el prompt de bash

.bash_profile

function parse_git_dirty {
  [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit, working directory clean" ]] && echo "*"
}
function parse_git_branch {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/[\1$(parse_git_dirty)]/"
}
function rvm_prompt {
~/.rvm/bin/rvm-prompt
}
export PS1='\h \[\033[1;33m\]\w\[\033[0m\]$(parse_git_branch)[$(rvm_prompt)]$ '

if [ -f ~/.git-completion.bash ]; then
  . ~/.git-completion.bash
fi