Don't take this the wrong way, but if a half dozen to dozen extra characters and ^C^V is too hard, maybe you shouldn't be writing HTML/CSS... Hell I'm not sure it would even be less characters.... take @Kleo's example removing the selectors so we can see the number of characters as a line.
box-shadow:1px 1px 25px; color:#000; color:#F00;
box-shadow:1px 1px 25px #000; box-shadow:1px 1px 24px #F00;
REALLY? That's "so hard" you need a separate property? Of course if it WERE a separate property, guess what?!?
box-shadow:1px 1px 25px #000; box-shadow:1px 1px 24px #F00;
box-shadow:1px 1px 25px #000; box-shadow-color: #F00;
Again, if a half dozen characters at best. ^C^V is your friend! It's so close as to make no-never-mind!
Admittedly, I say the same thing about that preprocessor SCSS asshat nonsense; usually it means someone is being too lazy to type, or simply failing to grasp how to use selectors properly in the first place.