I most certainly flip-flopped dozens of times regarding the coloration of headgear RR and Mueller were wearing.  I've made cases for white, grey, and black. After reading the Mueller Dossier (my new name for it) there is zero doubt in my mind that he's the dirty bastard we all originally thought he was.  Not one bit of integrity left. I have no idea why Q would want their roles to be vague, but that's just another mystery to add to my wish list of things we learn when this is all over.