when Munitions was announced as green, I knew Atomic had to be something other green. We only have two powers that are red based even though there are tinges of orange to fire and some red elements to Sorcery. In terms of ability trays there us no full orange. I expect it could have a little yellow to the icons as well since the yellowish ability trays are faction specific. If/when Serums comes out, I expect it to be green. The concern I have is with water having another possible blue/white combination.