Remember the Livestrong crazy where everyone had a yellow rubber wristband? Well the same company that made the Hopside Down beer glass decided to do the same thing for your beer bottle or can. This would sure make it easy to identify a rouge beer. They have a couple of different models that say “mine” in different colors or different levels of drunkenness in different colors. It would probably be a pain to switch out your beerbands every time you feel a new level of your drink, but I bet there are those out there that would do it.
These bands also fit over cans incase you were concerned.