- Made Color::colorize (const std::string&, const std::string&) static,
so that it is now simple to colorize a string:
std::cout << Color::colorize ("text", "red");
- Added sample foreground and background colors to the "color" command,
and used the above shortcut to simplify handleOnColor.
- Inverted the _COLOR_NOFG to be _COLOR_HASFG, for better readability and
the added benefit of having newly constructed color with no specification
having a value of 0.
