Can you think of a better console text colouring library for shell?

gistfile1.sh

#!sh

function newline() { printf "$@\n"; }
function color() {
    output="\e[$1m"
    shift
    [ -n "$1" ] && output="$output$@\e[00m"
    printf "$output"
}
function reset() { color "00"; }
function red() { color "01;31" "$@"; }
function white() { color "01;37" "$@" ; }

function warning() {
    newline "$(red "$@")"
}

function suggestion() {
    newline "(run $(white "$1") if you want me to take care of this)"
}