This law is still in effect. As a matter of fact, last year a major grocery chain here in Quebec challenged the government by stocking their shelves with a brand of margarine brought in from Ontario?the province just to the west. The grocery chain was fined and forced to remove the product from its shelves.

My Grandma used to tell me about how when margarine first came out, it was very light yellow and was sold with a packet of yellow dye or coloring that the customer would mix in at home. This wasn't in Canada, but the U.S., I think in Michigan.