Buff (colour) Buff (colour) Buff is the pale orange-brown colour of the undyed leather of several animals. As an RYB quaternary colour, it is the colour produced by an equal mix of the tertiary colours citron and russet. The first recorded use of the word "buff" to describe a colour was in "The London Gazette" of 1686, describing a uniform to be "...a Red Coat with a Buff-colour'd lining". It referred to the colour of undyed buffalo leather, such as soldiers wore as some protection: an eyewitness to the death in the Battle of Edgehill (1642) of Sir Edmund Verney noted "he
Color anomaly Color anomaly Colour anomaly, sometimes referred to as partial colour blindness, is an inherited condition in which people have full trichromatic colour vision, but do not make the same colour matches as the majority of the human population. It is much more common than dichromacy or other forms of colour blindness, affecting about 6% of human males in Northern European populations. Two forms are common, known as protanomaly and deuteranomaly. In order to match a given spectral yellow light, protanomalous observers need more red light in a red/green mixture than the majority of observers, and deuteranomalous observers need more green.