The green beer must be an American thing. I am sure places in Vancouver must do it too, but I have yet to see any green pints being offered at my local. I would never drink a green beer. Why would you even think of adding food colouring to a beer? It must be a pis spoor beer if you need to add something to it to make people drink it

Besides the green wouldn't show up in my Guinness or Murphy's.

I enjoy St. Patrick's day, but I also get tired of people who likely can't spell Ireland let alone point it out on a map using it to justify a massive piss up. Go celebrate, but at least know what it is you are celebrating.