Colorize text, either the whole line, or within a line.

    Color site: https://misc.flogisoft.com/bash/tip_colors_and_formatting
    See also: The 'clrls' command.

Usage: clr [action] # Where action is:

Usage: clr <action:help> # Where action is:

    help  Help by showing these instructions.
    list  List all colors.  Use this to understand the codes.
    ls    List the colors used by the 'ls' command.
    *     Print using the two or three character code.