after hearing the red john voice "game over i won" his voice sounded like sean barlow to me, so i rewatched on youtube the scene and the moment they leave the place on the door is a sign..

http://picpaste.com/hmm-cEqAwuWI.JPG

now, the final scene from episode 7 they zoom this in the church and episode ends:

http://picpaste.com/hmm222-5mg6RLlq.JPG

same symbol different colors.. at sean's place the pyramid is red..

i've been just curious if this is a link or hint that barlow is RJ maybe? anyone has ideas on the symbol?