10 Downing Street in London was similarly yellow darkened by soot. During the refurbishment they decided to paint the yellow bricks to maintain the classic look

10 Downing Street in London was similarly yellow darkened by soot. During the refurbishment they decided to paint the yellow bricks to maintain the classic look of the building. See https://en.wikipedia.org/wiki/10_Downing_Street#Rebuilding:_1960%E2%80%931990 https://en.wikipedia.org/wiki/10_Downing_Street#Rebuilding:_...