Green milk for Saint Patrick : when natural is not your concern

Some companies are trying harder and harder to go natural, without this and that, brainstorming for hours and days to define the ingredients that consumer would accept, which packaging and so on.

And there are some companies like Trumoo (http://trumoo.com/) who offers for St Patrick a half gallon (about 2L) jerrycan of green colored vanilla flavoured milk... (picture is coming from their Facebook)