Colored shell script output library

I took demure's list as inspiration and did a little DRYing out of it. (And changed \e to the hexadecimal \x1B, since the former isn't supported in OS X's Terminal.app since Snow Leopard.) Here's what I came up with:

## Colours and font styles
## Syntax: echo -e "${FOREGROUND_COLOUR}${BACKGROUND_COLOUR}${STYLE}Hello world!${RESET_ALL}"

# Escape sequence and resets
ESC_SEQ="\x1b["
RESET_ALL="${ESC_SEQ}0m"
RESET_BOLD="${ESC_SEQ}21m"
RESET_UL="${ESC_SEQ}24m"

# Foreground colours
FG_BLACK="${ESC_SEQ}30;"
FG_RED="${ESC_SEQ}31;"
FG_GREEN="${ESC_SEQ}32;"
FG_YELLOW="${ESC_SEQ}33;"
FG_BLUE="${ESC_SEQ}34;"
FG_MAGENTA="${ESC_SEQ}35;"
FG_CYAN="${ESC_SEQ}36;"
FG_WHITE="${ESC_SEQ}37;"
FG_BR_BLACK="${ESC_SEQ}90;"
FG_BR_RED="${ESC_SEQ}91;"
FG_BR_GREEN="${ESC_SEQ}92;"
FG_BR_YELLOW="${ESC_SEQ}93;"
FG_BR_BLUE="${ESC_SEQ}94;"
FG_BR_MAGENTA="${ESC_SEQ}95;"
FG_BR_CYAN="${ESC_SEQ}96;"
FG_BR_WHITE="${ESC_SEQ}97;"

# Background colours (optional)
BG_BLACK="40;"
BG_RED="41;"
BG_GREEN="42;"
BG_YELLOW="43;"
BG_BLUE="44;"
BG_MAGENTA="45;"
BG_CYAN="46;"
BG_WHITE="47;"

# Font styles
FS_REG="0m"
FS_BOLD="1m"
FS_UL="4m"

The BR_ colours are the "bright" or "high-intensity" colours. Done this way, you can even mix them with other font styles. (e.g. underlined bright white)

If you want to bookmark this, I made a gist for it: https://gist.github.com/ian128K/39a490e5aa8d3bb77a8b

Here is an modified snippet from my dotfiles that should do what you want

RCol='\e[0m'    # Text Reset

# Regular           Bold                Underline           High Intensity      BoldHigh Intens     Background          High Intensity Backgrounds
Bla='\e[0;30m';     BBla='\e[1;30m';    UBla='\e[4;30m';    IBla='\e[0;90m';    BIBla='\e[1;90m';   On_Bla='\e[40m';    On_IBla='\e[0;100m';
Red='\e[0;31m';     BRed='\e[1;31m';    URed='\e[4;31m';    IRed='\e[0;91m';    BIRed='\e[1;91m';   On_Red='\e[41m';    On_IRed='\e[0;101m';
Gre='\e[0;32m';     BGre='\e[1;32m';    UGre='\e[4;32m';    IGre='\e[0;92m';    BIGre='\e[1;92m';   On_Gre='\e[42m';    On_IGre='\e[0;102m';
Yel='\e[0;33m';     BYel='\e[1;33m';    UYel='\e[4;33m';    IYel='\e[0;93m';    BIYel='\e[1;93m';   On_Yel='\e[43m';    On_IYel='\e[0;103m';
Blu='\e[0;34m';     BBlu='\e[1;34m';    UBlu='\e[4;34m';    IBlu='\e[0;94m';    BIBlu='\e[1;94m';   On_Blu='\e[44m';    On_IBlu='\e[0;104m';
Pur='\e[0;35m';     BPur='\e[1;35m';    UPur='\e[4;35m';    IPur='\e[0;95m';    BIPur='\e[1;95m';   On_Pur='\e[45m';    On_IPur='\e[0;105m';
Cya='\e[0;36m';     BCya='\e[1;36m';    UCya='\e[4;36m';    ICya='\e[0;96m';    BICya='\e[1;96m';   On_Cya='\e[46m';    On_ICya='\e[0;106m';
Whi='\e[0;37m';     BWhi='\e[1;37m';    UWhi='\e[4;37m';    IWhi='\e[0;97m';    BIWhi='\e[1;97m';   On_Whi='\e[47m';    On_IWhi='\e[0;107m';

Then you can just echo -e "${Blu}blue ${Red}red ${RCol}etc...."

echo -e "\033[33;31m Color Text" - red
echo -e "\033[33;32m Color Text" - green
echo -e "\033[33;33m Color Text" - yellow
echo -e "\033[33;34m Color Text" - blue
echo -e "\033[33;35m Color Text" - Magenta
echo -e "\033[33;30m Color Text" - Gray
echo -e "\033[33;36m Color Text" - Cyan

http://techietent.blogspot.in/2013/03/how-to-echo-colored-text-in-linux-shell.html

Shameless plug... check Rainbow.sh

Usage

Just import rainbow.sh and start using the available functions in your scripts.

source rainbow.sh 

vargreen=$(echogreen "Grass is green")
varred=$(echored "Roses are red")

echo "$vargreen ..Crickets are noisy.. $varred"