Iron has been in the planning since 2008. I've tried at least 3 different versions before landing on this one.
Iron started out vaguely as I wonder what Gray Dalmatian spots would look like on a black Maine Coon.
Spot AddBallz coded using Brynn Bytes Spot Generator v 1.2 currently available at Seeing Stars
I also followed Hexpedia's Houla Spot Tutorial