A sweet PS1 for displaying git state and virtualenv

.bash_profile

red="\[\e[0;31m\]"                                                                                                                                                    
green="\[\e[0;32m\]"
yellow="\[\e[0;33m\]"
purple="\[\e[0;35m\]"
cyan="\[\e[0;36m\]"
end="\[\e[0m\]"

GIT_PS1_SHOWUPSTREAM=auto
GIT_PS1_SHOWSTASHSTATE=true
GIT_PS1_SHOWDIRTYSTATE=true
VIRTUAL_ENV_DISABLE_PROMPT=true

display_virtualenv () {
     [ ${VIRTUAL_ENV} ] && echo `basename ${VIRTUAL_ENV}` 
}

display_cool_pipe () {
    if [[ $(__gitdir) && ${VIRTUAL_ENV} ]]
    then
        echo "|"
    fi  
}

export PS1="${cyan}\w @ \@${end} ${purple}(${end}${yellow}\$(display_virtualenv)${end}${purple}\$(display_cool_pipe)${end}${yellow}\$(__git_ps1 "%s")${end}${purple})${end}\n${purple}-> ${end}"

The PS1 looks super awkward because I have to escape the function calls, which would escape any color formatting that they would return