The arrangement of colours in the Munsell Ordering System and the Sci\ART methodology are set out to flow according to nature. It and assigns the millions of colours we see into 12 harmony groups. Each tonal group, or ‘Season’, is attributed with different predominant colour characteristics defined by hue, value and chroma. The method is called ’12 Season Colour Analysis’. The 12 seasons are made up of four main (true) seasons, namely Spring, Summer, Autumn, and Winter, which are all further categorized to represent and include the many variations of human colouring.