I found the update and applied that. I also saw the Yeti event but nothing else. Recalls me the experience in another game where the admins said "problem solved" as soon as the ongoing event ended.
They are not doing anything. My game automatically clears event data upon shutdown, that today it downloaded something big and refused to display that. I assume that the event data are downloaded correctly, but some kind of mask prevents us from accessing.
If you want color bombs and coloring candies and Rachel happens to be in the level, pick her. Her rainbow candy can either make easier match to form those candies, or copy them to get 4.