Blender Shader Tip: Separate Arrayed Objects by Island: Or Getting Different Colors for Elements

This took my HOURS to figure out, and that was after searching the Internet for answers. But if you have an object and it has been modified by an Array Modifier, you can have EACH different instance of it become a different color. And yeah, while it took me HOURS to figure out...the solution is very simple. Which is cool! But kind of sad for me and so much wasted time.