Colour Blindness

A general consensus is, if you suffer from colour blindness you cannot see any colours at all apart from black, white, and shades of gray. Wrong! This form of complete colour blindness is a very rare subtype of colour vision deficiency. A much more common type is red-green colour blindness. Generally speaking, colour deficiency would be more appropriate than colour blindness. Colour Blindness begins when you have only a very light change of colour perception and it ends with complete colour blindness combined under the umbrella term monochromacy.