Bash colour code quick reference

bash_colours.sh

#!/usr/bin/env bash

####
# Invoke with 
#   $ bash_colours [limit]
###

if hash tput >/dev/null 2>&1; then
  bound=${1:-255}
  for (( i = 0; i < bound; i++ )); do
    echo -n "$(tput setaf $i)[$i]$(tput sgr0)"
  done
else
  echo "Requires tput"
  exit 1;
fi