Orange is considered to be the national colour of the Netherlands. The Dutch royal family is called: the house of Orange. People sport orange on the 30th of April, Koninginnedag, Queens Day, and during major international football championships to show their support for the Dutch national team.
It creates a superficial sense of national identity and has celebratory rather than nationalistic overtones. During European and World Cup Football, orange is the name of the game, and people decorate cafés, shops and sometimes even their house in orange. The only other time that people sport orange is on the 30 th of April, Koninginnedag, Queens Day, a bank holiday. (From Routledge, an accelerated courses in Dutch, 2005, by Gerdi Quist, Christine Sas and Dennis Strik).