There seemed to be some foreshadowing in the lead up to the reveal. For instance, when Jack said something to the effect of, 'when you hire Michaelangelo, you don't tell him how to paint the Sistine Chapel'. That almost sounds like he's saying that this is all Pat's idea and that he thinks the theme sounds odd too, but he's deferring to Pat as the "expert". Also, when Pat was talking about an original them he said, "you wonder if everyone will be in on the joke". Like he was prepping everyone for an odd theme and was almost telling us to hold off on judging this, it may sound stupid at first. Just interesting to look back at their speeches after seeing the theme.