Perhaps I'm misreading Kindle but I've noticed that some subclasses don't seem to line up with their element. Like the Veil subclass, which has a blue/Volt coloring, consistently mentions Nether and Null in all three of its powers, or Graviton, which has red/Pyre coloring, consistently mentions lightning. All in all, Kindle is pretty damn good and can't wait to see more!
Hi! The colors were kept to be consistent with the original class colors (red = Colossus, blue = Stalker, purple = Wych). Each page is dedicated to an element, starting with the Pyre classes, then the Volt, then the Nether. I'll add some clarifying titles to the classes!
Though I'm not sure I follow when you mention the Graviton consistently mentioning lightning.