Why arn't teams playing in their traditional colours......when there is no clash.
eg France v NZ
South Africa v Scotland
..even really England v Argentina
...will Wales play in red this evening?
Partly to help those with colour blindness I think, so they try to have 1 team in a light coloured kit and 1 in a dark kit. In a year or 2 Wales v Ireland won't be red v green anymore.