Orange (colour) and political activities, with the colour orange being associated with Protestantism similar to the Netherlands. In optics, orange is the colour seen by the eye when looking at light with a wavelength between approximately 585–620 nm. It has a hue of 30° in HSV colour space. In the traditional colour wheel used by painters, orange is the range of colours between red and yellow, and painters can obtain orange simply by mixing red and yellow in various proportions; however these colours are never as vivid as a pure orange pigment. In the RGB colour model (the system used to create
Colour sergeant Marines retained the rank throughout. Historically, colour sergeants of British line regiments protected ensigns, the most junior officers who were responsible for carrying their battalions' colours to rally troops in battles. For this reason, to reach the rank of colour sergeant was considered a prestigious attainment, granted normally to those sergeants who had displayed courage on the field of battle. This tradition continues today as colour sergeants form part of a colour party in military parades. Colour sergeants are referred to and addressed as "Colour Sergeant" or "Colour" ("Colour Sergeant Hewitt" or "Colour Hewitt", for instance) in the Army, or