Gap has banned extensive use of the colour red in its in-store ads to avoid causing offence.

ECONOMIST: American retailers

Wearing maroon jerseys (the only colour available at the local sporting-goods store), and with high-top shoes, leather maskless helmets and trousers padded with magazines, the Maroons beat the league's other strong team, the Chicago Cardinals, towards the end of the 1925 season.

ECONOMIST: An old wrong may be about to be righted

The greeting I received was very warm and inviting and the store owner personally helped my out with my problem and aided me in finding a colour that fit best with what I needed.

FORBES: Think Yelp is Unbiased? Think Again!!