Forum:Mystery of Xehanort's Eyes...

I'm confused. Why do Master Xehanort, Braig/Xigbar, Saïx, & Vanitas all have amber-gold eyes and pointed ears, as opposed to how Ansem the Wise, Xehanort's Heartless/"Ansem, the Seeker of Darkness", & Xemnas all have amber-orange eyes? All I know is that it is all connected to darkness somehow. And why doesn't Riku have amber eyes, considering how he accepted his darkness and even pushed its limits?
 * I'm guessing it's because he didn't reject the light as well, which is why his ares are glow-in-the-dark blue. Glorious  CHAOS!  22:53, May 6, 2010 (UTC)