Same Ink / Different Material - Different Color

Shown in this blog is a fabulous handout from Flint Ink. As the resolution of my post is not clear;
The question is:     "Which stocks are printed with the same ink ?"

The answer is:     "Here's the same ink on a variety of stocks."

Please note that Color Quiz is a registered trademark of  Flint Ink.
Be sure to visit:
http://www.flintgrp.com/
http://www.printindustry.com/Newsletters/Newsletter-21.aspx