Archetypes are very fluid in this cube--so fluid that I drew this crazy diagram to demonstrate: https://photos.app.goo.gl/QsuvaRHAXbCCniFp9

That's not to say that tight synergies don't exist, however! Here are the theme "ingredients" present in each color--you can see how they could combine into unique two-color or even three-color decks!:

White: Allies, Lifegain, Levellers, Totem Armor, Defenders, Awaken
Blue: Levellers, Rogues/Mill, Wizards/Prowess, Totem Armor, Landfall, Awaken, Defenders
Black: Sacrifice, Allies, Lifegain, Rogues/Mill, Levellers, Eldrazi-enablers,
Red: Allies, Aggro, Landfall, Wizards/Prowess, Defenders, Sacrifice
Green: Ramp, Landfall, Eldrazi-enablers, Totem Armor, +1/+1 counters, Sacrifice, Defenders

Patch Notes: The major change with Zendikar Rising's release is that I've constricted allies to Mardu colors (WBR). That leaves blue and green space to do other things--green has more landfall and kicker, blue has more rogues and spells. I've also added most of the double-faced land/spell cards to each color, and constricted Eldrazi drones to Green and Black (with a dash of Red, as they help with the Sacrifice them). I decided against the Party mechanic, though I've buffed Mill to support Rogues, and Wizards/Prowess reinforces the existing UR Rebound theme.