For golem phase, my group chooses not to burn Blue down before color swap, since we will then have a 50% chance of not having to deal with Green for the rest of the current golem set. So Blue > Green > Red.

Due to this, I will first dot Blue (and put Garuda on it), dot Red and have Garuda Contagion it, then dot Green. By that point it's almost time for first color change so you just go from there. The reason I Contagion Red is that it has a 100% chance to be not-Red after the color swap, so it will be a priority kill one way or another.