[ Level 3 ] Bash script for color ansi.

#!/bin/bash

## Get ansi color code
## Usage:
##   getAnsiColorCode (f)orward_ground/(b)ack_ground color_name
## ex.
##   getAnsiColorCode f/b black/red/green/yellow/blue/magenta/cyan(purple)/white/default
getAnsiColorCode() {
  sReturnCode=""
  fb='f'
  color='default'

  if [ $# -eq 1 ]
  then
    color="$1"
  elif [ $# -gt 1 ]
  then
    fb="$1"
    color="$2"
  fi

  if [ "$fb" == "b" ]
  then
    sReturnCode='4'
  else
    sReturnCode='3'
  fi

  case $color in
  black)
    sReturnCode="${sReturnCode}0"
    ;;
  red)
    sReturnCode="${sReturnCode}1"
    ;;
  green)
    sReturnCode="${sReturnCode}2"
    ;;
  yellow)
    sReturnCode="${sReturnCode}3"
    ;;
  blue)
    sReturnCode="${sReturnCode}4"
    ;;
  magenta)
    sReturnCode="${sReturnCode}5"
    ;;
  cyan|purple)
    sReturnCode="${sReturnCode}6"
    ;;
  white)
    sReturnCode="${sReturnCode}7"
    ;;
  *)
    sReturnCode="${sReturnCode}9"
    ;;
  esac
  echo ${sReturnCode}m
}

## color echo message
## Usage:
##   cecho fg_color bg_color
## ex.
##   cecho black red message
cecho() {
  fgColor='default'
  bgColor='default'
  message=''
  if [ $# -ne 0 ]
  then
    if [ $# -eq 1 ]
    then
      echo $1
    else
      if [ $# -eq 2 ]
      then
        fgColor=$1
        message="$2"
      else
        fgColor=$1
        bgColor=$2
        message="$3"
      fi
      fgCode=`getAnsiColorCode f $fgColor`
      bgCode=`getAnsiColorCode b $bgColor`
      echo -en "\033[$fgCode\033[$bgCode$message\033[0m";
    fi
  fi
}

## status echo message
## Usage:
##   secho OK/FAIL message
## ex.
##   secho OK/FAIL message
secho() {
  status='OK'
  message=''
  if [ $# -eq 1 ]
  then
    message="$1"
  else
    status="$1"
    message="$2"
  fi

  echo -n "$message ... ["
  if [ "$1" == "OK" ]
  then
    cecho green OK
  elif [ "$1" == "FAIL" ]
  then
    cecho red FAIL
  else
    cecho yellow "$1"
  fi
  echo "]"
}

secho OK "Run $0 is"

$ ./testColor2.sh 
Run ./testColor2.sh is ... [OK]

Wish this helps.

regards,
Stanley Huang