We actually hadn’t been specifically looking at troop/traitstone colors to ensure there was a nice spread coming out in events. Up until now, first & foremost, we’ve been trying to fill in gaps in Kingdoms, and create some interesting counters & synergies. We’ll keep an eye on the color rotations in future - no promises it will be perfect though!
However, you’ll be pleased to know that next week is a new traitstone!