Yes.
They do. (At least the smart ones. Me.) If I did this, it would be with light beer that is trashy and something I would not typically drink.
Speaking of, does anyone know if they sell PBR in Canada? :lol
My dad recently told us that to make proper green beer you should be using blue food coloring. I think my dad just drank yellow piss beer (miller) for too long.
Still, experimentation means bonus points for science.