<P> Those taking part in Koningsdag commonly dye their hair orange or wear orange clothing in honour of the House of Orange - Nassau , which rules over the Netherlands . Orange - coloured drinks are also popular . This colour choice is sometimes dubbed `` orange madness '' , or in Dutch , oranjegekte . A local Orange Committee member said of Koninginnedag in 2011 : </P>
<P> Those taking part in Koningsdag commonly dye their hair orange or wear orange clothing in honour of the House of Orange - Nassau , which rules over the Netherlands . Orange - coloured drinks are also popular . This colour choice is sometimes dubbed `` orange madness '' , or in Dutch , oranjegekte . A local Orange Committee member said of Koninginnedag in 2011 : </P>
why is everyone dressed up in orange on king 's day
why is everyone dressed up in orange on king 's day
in honour of the House of Orange - Nassau , which rules over the Netherlands
in honour of the House of Orange - Nassau , which rules over the Netherlands