Okay so I'm probably wrong but the other day while listening to WoK and drawing a picture of Shallan, which was terrible by the way, I got to the part where Dalinar has his vision of the recreiance. (I so did not spell that write.) And when the people all rushed for the shard blades while the idea struck me that maybe there were only dark eyes on Roshar but then after the recreiance, since shard blades make you a light eyes, poeple got light eyes from the shard blades and as they married and stuff their light eye color and dark eye color combined to make a bunch of different colors. What do you guys think?