They represent chess moves. Both sides hace "castled" their Kings, putting both sides in a defensive position. The Green is suppose to represent Rothschild (they gave their reasons. so-so). Green is suppose to represent Hillary. Again they gave their reasons. so-so. I gues I say so-so because i really did not "get it" yet. That will mess with y'all heads. Argh!
Am with Cboldt on the Green castle. Seems too much of a stretch to make that connection.
Also in this theory (or group of theories), "Clock activated" means it is one side or the other's turn to move - usually taken, I think, as white hat's turn to move.
My take is that this Q-post is less for anons to decode, and more for the people with real-world force capability.
RED_CASTLE appears in "Feb 14 2018 18:41:23 Q !UW.yye1fxo 89" and looks like one of several white hat action assets. GREEN_CASTLE may be another white hat action asset, one not introduced until yesterday.
Ok, if Castle refers to timed chess moves.....what if we look at it simpler, go back to the Q post where he posted a play from a famous chess game, then count how many times the clock has been activated and count out the moves that makes and see how many are left in that game?