The library defines verbal constants for ANSII color codes.
Now you can use words to tell bash what color you want to use for output.

Also, it defines functions to quickly output colored text.
As well as the function to display nice table of all colors.

Print "foobar" with red foreground.

$ clr_red "foobar"

Print "foobar" with green background.

$ clr_greenb "foobar"

Print "foobar" with cyan foreground and bold font.

$ clr_bold "$(clr_cyan foobar)"

or manually, using variables

$ clr_escape "foobar" $CLR_BOLD $CLR_CYAN

or any other code

clr_escape "foobar" 1 36

1. Download source

$ curl https://raw.github.com/maxtsepkov/bash_colors/master/bash_colors.sh > .bash_colors

2. Load into your script

$ source .bash_colors

$CLR_*

Variables for each supported color code. E.g. $CLR_WHITE, $CLR_BLACK
Call clr_dump for full list.

$CLR_ESC
is a special variable for escape code (\033) followed by [ character.

clr_dump
Output table of available colors, functions and variables.

clr_* string
Functions for each supported color. E.g. clr_white, clr_black
See clr_dump for list.

clr_escape string $CLR ...
escape string with given colors. Latest colors overwrites previous.

clr_reset
Reset formatting. Useful for custom usage of $CLR_* variable series.

console_codes(4)
Advanced Bash Scripting Guide