You know those role-players that insist on writing down details like their eye color? Well, we're going to make eye color matter in DnDs.
In the beginning, the Lords of Mutability Fought the Lieges of Stability. Jokulhaups, god of renewal, remained unconcerned in the fight, viewing time as a cycle and the conflict as pointless. However, the Elder Eye, a god that switched sides and was later imprisoned for it, wormed his way into Jokulhaup's heart and rent it in twain.
From the Strength, Constitution, Intelligence, Dexterity, and Charisma of the divided god was born Tiamat, she of five heads that represented the five aspects. From Wisdom was born the god Bahamut. Being of a common origin, they created similar agents to enact their agendas, the dragons.
Bahamut has to play a patient game. He knows he can't beat Tiamat without eons of careful and considered stratagems. Bahamut's most powerful creations are the psionic dragons, most of which became gods in their own right. Metalic dragons are also Bahamut's doing. In his wisdom, Bahamut has not deigned to rule his creations, but rather does parallel universe Mario64 Chess, prodding pieces into position.
Tiamat has five heads of five hues. Each head has endeavored to create cult and cabals throughout the cosmos. These are known as The Heads to those--usually mad prophets--who have been able to glean her designs. Unbeknownst to Tiamat herself, she is a pawn of the Elder Eye, serving as his aperture into reality and as the get out of jail card he's been manipulating for half a kalpa.
So where does eye color come in? Well, if a player chose to go with red, yellow, blue, green, or black for their PC's eyes, they are already an inheritor of Tiamat's legacy. She's the dark ancestor of humanity on a spiritual level. Bahamut counts for all the other colors. No, they (probably) didn't make humans and demihumans personally, but they have manipulated the history of the races of Midgard.
Now this has campaign potential. At first, the GM can mention the striking eye color of certain prominent characters, then the players can start to connect the dots and get paranoid of anyone with that chroma. Then a new croma is introduced. What color were so-and-so PC's eyes again? The same color? Huh. Have you ever thought of switching sides? This agent of Tiamat would like to make you an offer, and it's really tempting...
Of course, eye color is just a hint at what could be in the complex makeup of one's soul. In fact, when people really consciously dedicate themselves to factions, their eye colors change to match their allegiance.
The Red faction of Tiamat is all about strength. They tend to be war mongers and generals. War forever! That's the ticket! They love riling up the demihumans, especially the "ugly" ones, to keep them on hostile terms with with humanity. Keep in mind that there are many Red agents within the orc and goblinoid tribes too; they work with their human counterparts to keep tensions and racism high.















