What is "oranjegekte"

Oranjegekte (Orange craze) or Oranjekoorts (Orange fever) is a phenomenon in the Netherlands that occurs during major sporting events, especially international football championships, and during Koningsdag, an annual holiday celebrating the king's birthday. It manifests itself in the wearing of orange clothing such as T-shirts, caps and scarfs; lavish attention for sports and sports fans in the media; and the decoration of cars, rooms, houses, shops, and even entire streets in orange, the traditional color of the Dutch royal family, the House of Orange-Nassau.