# Set-up colours.
if [ "$BASH" ] && [ "$BASH" != "/bin/sh" ]; then
    _colour_terminal=$(tput colors 2>&1)
    if [[ -t 1 ]] && (( ${_colour_terminal} > 0 )); then
        export PS1='\[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\[\033[{{ prompt_colour_mapping[prompt_colour] }}m\]\u@\h{% if prompt_id %}[{{ prompt_id }}]{% endif %}:\w\$ \[\033[0m\]'
    else
        export PS1='\[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\u@\h{% if prompt_id %}[{{ prompt_id }}]{% endif %}:\w\$ '
    fi
fi