You gotta understand why man. It's a bit difficult if you're not into the math behind it, so here's an illustration I whipped up: The example highlights on the right are really burnt out, but with softer spec values it's just way more apparent, you'd get yellow-pinkish spec all over without using blue.
i lolled :P Black and White Background: Like already said you can do amazing things with them, sometimes i'm suprised of how much depth people can bring to something with a plain and simple white background Michael Kutsche for example has two paints that illustrate the point so well on white on black Looking at reference…