A plain blue shirt with the crest on the top left.
Yes, it is been a tradition. God knows why!
Individual league rules require the uniform colors for home teams and visiting teams.
Black
As of the 2011 season, there are currently 2 MLS teams that have Canadian home fields. Toronto FC and Vancouver Whitecaps FC.
White for home, Red for away
Red and black
Black and blue
Red and blue
Red & blue
White
Ultramarine blue
Sky blue