In international rugby, the need for second kits arises most often in the Six Nations, where Scotland, France and Italy all play in different shades of blue. The tournament takes the form of a single round-robin with home advantage alternating each year, and it is scheduled so that each of the three aforementioned sides plays one of the other two at home and the other away in a given season. In turn, this means that each of these three sides will play one home game in its alternate jersey. These have traditionally been white, but in the 2015 Six Nations Scotland and France adopted red as their alternate colour.