#!/bin/bash

for ((bg=0;$bg<10;bg=(($bg+1)) ))
do 
  for ((bld=0;$bld<2;bld=(($bld+1)) ))
  do 
  for ((fg=0;$fg<10;fg=(($fg+1)) ))
  do 
  color=$bld";4"$bg";3"$fg
  echo -e "\E["$color"m"$color"\E[0m\c"
  done
  echo
  done
done