In Vietnam yellow was historically associated with royalty.

In Hue, the former Royal Palace has yellow walls with exquisite murals of birds and nature.
The roof of the Royal Palace has yellow tiles to signify royalty.
The Royal Palace with its yellow walls and red doors consist of the two most significant colours in Vietnam today, the colours of its flag.
The Royal Tombs also have red and yellow predominating.
In Hoi An, the next large town down from Hue, it seems like almost the entire town is painted yellow, signifying happiness.
The New Year is symbolized by a yellow flower which implies change, but as yellow is also the colour of gold, it is associated with wealth and prosperity.
More on our December 2013 trip to Vietnam…

More on Cee’s Fun Foto Challenge: http://ceenphotography.com/2014/09/30/cees-fun-foto-challenge-the-color-yellow/