adds branch name in red/green based on any changes in git

.bashrc

c_cyan=`tput setaf 6`
c_red=`tput setaf 1`
c_green=`tput setaf 2`
c_sgr0=`tput sgr0`

parse_git_branch ()
{
    if git rev-parse --git-dir >/dev/null 2>&1
    then
        gitver=$(git branch 2>/dev/null| sed -n '/^\*/s/^\* //p')
    else
        return 0
    fi
    echo -e "[$gitver] "
}
branch_color ()
{
    if git rev-parse --git-dir >/dev/null 2>&1
    then
        color=""
        if git diff --quiet 2>/dev/null >&2 
        then
          color="${c_green}"
        else
          color="${c_red}"
        fi
    else
      return 0
    fi
    echo -ne $color
}
  
PS1='\[$(branch_color)\]$(parse_git_branch)\[${c_sgr0}\]\u@\w: '