I'm sorry, I've got to ask... because it gets said in every one of these threads..
For those of you who say, "Why would you add green food coloring??? Since it's yellow, you'd have to add blue."
What color, exactly, do you think green food coloring would make the beer then? I mean, yes, blue and yellow makes green. But guess what? Green makes green too.
I meant 1 drop only of blue. You can use green color, (duh), but I put 2 drops of blue in a beer recently to show my wife that I can make green beer and it was pretty dark green and slightly off. That was a Founders Centennial Pale Ale.
I think anything more than a single drop in 12 ounces will be too much.