Use `tput` to show some different combinations of colors and settings.

show_tput.sh

#!/bin/bash

function normal {
    tput sgr0
}

normal="$(normal)"

function example {
    printf "%s" "${normal}"
    COMMAND=()
    while [ -n "$1" ]; do
        if [ "$1" == "setaf" ]; then
            tput $1 $2
            printf "tput $1 $2; "
            shift
            shift
        else
            tput $1
            printf "tput $1; "
            shift
        fi
    done
    printf "%s" "${normal}"
}


echo "${normal}Reset: tput sgr0;"
echo ""

echo "Non-bold ANSI colors:"
i=0; while [ $i -lt 8 ]; do
    echo "${normal}Example: $(example setaf $i)"
    let i=$i+1
done
echo "${normal}"

echo "Non-bold ANSI colors:"
i=0; while [ $i -lt 8 ]; do
    echo "${normal}Example: $(example bold setaf $i)"
    let i=$i+1
done
echo "${normal}"

echo "Reverse video:"
i=0; while [ $i -lt 8 ]; do
    echo "${normal}Example: $(example rev setaf $i)"
    let i=$i+1
done
echo "${normal}"

echo "Bold reverse video:"
i=0; while [ $i -lt 8 ]; do
    echo "${normal}Example: $(example rev bold setaf $i)"
    let i=$i+1
done
echo "${normal}"

echo "Underline:"
i=0; while [ $i -lt 8 ]; do
    echo "${normal}Example: $(example smul setaf $i)"
    let i=$i+1
done
echo "${normal}"

echo "Bold underline:"
i=0; while [ $i -lt 8 ]; do
    echo "${normal}Example: $(example smul bold setaf $i)"
    let i=$i+1
done