What is the story behind the colourful houses in East Greenland?

The tradition of colouring houses in East Greenland began with the introduction of the first wooden houses. Given that East Greenlandic is solely a spoken language, in the initial colonial period, most Greenlanders were not able to read Danish written language, with the colours primarily functioning as practical signage in the established settlements. A red building indicated a store, yellow denoted a hospital, and a blue structure marked the local fish factory. While many buildings now use colours for decorative purposes, some still uphold this historic tradition.

Red: churches and stores, including the houses where the priest or shop owner lived. The most commonly used color.
Yellow: hospitals, including the houses where the doctors or nurses lived
Green: radio communications, or later, telecommunications buildings in general.
Black: police
Blue: factories, fish plants