1 Pink buildings are abundant because it is the cheapest paint
Have you ever looked up and wondered why so many buildings in Hong Kong are painted a pale shade of pink? Turns out, it has everything to do with cost and very little to do with aesthetics. Historically, red was the colour of choice for many public housing estates, as it is the most affordable of all paints. Stemming from red ochre, a compound that is readily obtainable at low costs, it is the cheapest natural pigment to use. However, due to the intensity of the colour, building developers considered that a bright red building might be too aggressive for residents and the public, so they settled on a softer colour of pink, inadvertently spurring the establishment of pastel-coloured public housing estates.