My Red Is Your Blue

About 1 per cent of American men suffer from red-green colour blindness.

Recent experiments challenge the accepted notion that all of us have the same default perception of the colours we see. A person’s red could be the other person’s blue, technically, but still carry with it the same feeling.

Example: The colour of blood (deep red) or the blue sky could seem different to some people while carrying the same feeling or emotion when they encounter it.