Colorized git status in bash prompt

.profile

RED=`echo -e '\033[01;31m'`
BLUE=`echo -e '\033[01;34m'`
GREEN=`echo -e '\033[01;32m'`
NORMAL=`echo -e '\033[00m'`

function is_git_dirty {
  [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]]
}
function parse_git_branch {
  if is_git_dirty
  then
    git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/($RED\1*$NORMAL)/"
  else
    git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/($GREEN\1$NORMAL)/"
  fi
}

PS1="\w \$(parse_git_branch)"