Green bottles let the particular wavelength of sunlight through that causes skunkiness in beer. Brown bottles do not.
The Molson and Moosehead we get around here (NH) is almost always skunky, sometimes to a point where you can’t drink the beer. The same is true of Heiny.
The Molson in the brown bottles tastes OK here. Personally, I try to stick to local brews. We have a ton of microbreweries in the area.
But God didn’t make the little green bottles, and it don’t rain in Indianapolis in the summer time.
Sam Adams brewing may well say that about brown bottles, but Grolsch has green bottles too, and Beck’s, maybe they just have a long tradition of making beer back in the old world.
Still, Molson in a brown bottle is their cheaper beer, green bottles have their premium beer.
http://www.molsoncanadian.com/main/
I remember the Molson, I once had to cart home a case on a bike after the box broke, that was not exactly easy.