A while back, someone asked about the origins of the red & blue corner. I have given up searching for the post so as to answer directly and decided to post the answer. This originates from the prize ring. Rule 3 of the 1838 Prizering Rules specified what had become the accepted custom - that each fighter should have a coloured handkerchief, that these "colours" should be intertwined on one of the stakes, and the winner should claim both. This practice had grown up since Tom Johnson in the 1780's had introduced the practice of wearing colours, his own being sky blue. It was Jem Belcher who popularised the wearing of colours and gave his as the "yellowman" or "Belcher", and successive Bristolians adopted this colour. Not only were colours tied to the ropes; the fighters held up their drawers (shorts) with a tie of their own colours, and their drawers were tied below the knee with a coloured garter. The seconds and bottlemen wore the colours as scarves and belts. Fighters did not always retain the same colours. When Langan met Spring it was a case of black and blue. In the early days of amateur boxing there was a red corner and green corner and the fighter would wear a green or red tie around their waist. Subsequently this was done away with and now they wear different coloured vests ( red or blue headguards) and the corners are either red or blue corner, as is done in the professional ring. Hopes this explains it.