WSL with Ubuntu 18.04 and GNU bash, version 4.4.20(1)-release (x86_64-pc).
I wish to display a message with a conventionally named color via argument such as
-blue or anything like this (Without an end user required to define colors with machine syntax).
I don't think that even the modern versions of
echo can do that.
I'd prefer a shell-builtin and not installing anything.