UtakataNoAnnex
Senior Member
I'm not sure I buy that prevailing belief...as it seems up there with certain floor numbers should not be included because it brings bad luck. So that doesn't pass the balderdash detector for me...Same reason the majority of cars are black, gray, or silver. Resale. The prevailing belief is that folks won't want to buy into 'the red building' or 'the colourful building'. So we get this dreary, monochromatic, world. It sucks, but that's why.
...although, you did elude to a more simpler and likely explanation before. That is, grey materials are just cheaper to buy. Hence, it's really about value engineering here.