I gave up on season 6, mostly because I was mad they continued the show when the story lines were done. But yeah, the season 7 premier? Holy shit, I haven't had so much fun in ages! And the all-of-five-minutes Crowley was present = PERFECTION.
Anyway, here's Castiel in a stained glass window. Not a perfect replica-- even considering you couldn't really see the top and bottom-- I took artistic license. Fo sho.
ETA: Made the design look prettier even if it's a less faithful representation of the glass window in that ep.