Spotted: The Return of the Hanky Code?

Sure, we’ve read rumors of the mighty return of the hanky code for years (usually from friends still holding on to their glory days as a ’70s leather clone), but we’ve never actually seen the practice of wearing a colored bandana in either the left (gives) or right (receives) back pocket out in the wild (with the exception of visits to a leather bar or Gay Pride parades) until the past month. Repeated spottings of colored bandanas indicating some cute young things’ particular pervy kinks. Mostly worn as small cut pieces of bandana hanging off pocketed keyrings… me and my friends found ourselves wishing we had a cheat sheets for the whole thing.
I guess I’ll stick with the QueerClick orange on the left: “Anything, Anytime”