colorize.sh

#!/bin/sh
# Time-stamp: <2009-03-12 16:52:49 JST, hirose31>

_color_() {
  color=$1; shift
  echo -e "\e[${color}${@}\e[0m"
}

fg_black()   { _color_ "30m"   $@; }
fg_BLACK()   { _color_ "30;1m" $@; }
fg_red()     { _color_ "31m"   $@; }
fg_RED()     { _color_ "31;1m" $@; }
fg_green()   { _color_ "32m"   $@; }
fg_GREEN()   { _color_ "32;1m" $@; }
fg_yellow()  { _color_ "33m"   $@; }
fg_YELLOW()  { _color_ "33;1m" $@; }
fg_blue()    { _color_ "34m"   $@; }
fg_BLUE()    { _color_ "34;1m" $@; }
fg_magenta() { _color_ "35m"   $@; }
fg_MAGENTA() { _color_ "35;1m" $@; }
fg_cyan()    { _color_ "36m"   $@; }
fg_CYAN()    { _color_ "36;1m" $@; }
fg_white()   { _color_ "37m"   $@; }
fg_WHITE()   { _color_ "37;1m" $@; }

fg_RED_yellow()  { _color_ "43;31;1m" $@; }

colors=(black red green yellow blue magenta cyan white)

fg_RED_yellow "Louis Armstrong"
for ((i=0; i<=7; i++)); do
  cc=$((30+$i))
  color=${colors[$i]}
  COLOR=$(echo $color|tr 'a-z' 'A-Z')

  echo 'What a '$(fg_$color 'Wonderful')' '$(fg_$COLOR ' World')
done