tputcolors

#!/bin/bash

NAMES=("Black;" "Red;" "Green;" "Yellow;" "Blue;" "Magenta;" "Cyan;" "White;" "Not used;" "Default;")

echo "Foreground color:"
for FG_COLOR in {0..9}; do
    if [ $FG_COLOR -eq 0 ]; then tput setab 7; fi
    tput setaf $FG_COLOR
    echo -n "${NAMES[$FG_COLOR]} "
    if [ $FG_COLOR -eq 0 ]; then tput setab 9; fi
done
echo
echo
tput sgr0

echo "Background color:"
for BG_COLOR in {0..9}; do
    if [ $BG_COLOR -ne 0 ]; then tput setaf 0; fi
    tput setab $BG_COLOR
    echo -n "${NAMES[$BG_COLOR]} "
done
echo
echo
tput sgr0

echo "Text style:"
tput bold; echo "Bold"; tput sgr0
tput smul; echo "Underlined"; tput rmul
tput rev; echo "Reversed"; tput sgr0
tput blink; echo "Blinking"; tput sgr0
tput invis; echo "Invisible"; tput sgr0
tput smso; echo "Standout"; tput rmso

tput sgr0