Evolution of human colour vision that are found between 450 and 625. Individuals with various forms of colour blindness such as deuteranopia and protanopia are missing human middle wavelength sensitive or long wavelength sensitive opsins. Their minimum wavelength differences are <5 but only at around 500. Protanopes, who are missing long wavelength sensitive cones, are unable to distinguish between colours in the green-yellow-red section of the electromagnetic spectrum. They find yellow, red and orange colours to have much lower brightness when compared to a trichromat. The dimming of these colours can result in confusion in many cases, such as when attempting to identify red traffic
Colour guard and Regimental Colours. Colour guards in the artillery units are technically the lead gun's crew and leader (except in the Honourable Artillery Company which uses both guns and Colours) and there are no colour guards in the rifle regiments (nowadays The Rifles), the Royal Gurkha Rifles (which use the Queen's Truncheon) and in the Royal Hospital in Chelsea. All of the RN's Queen's Colours are identical. Within the RN a colour guard unit consists of: In the Chinese People's Liberation Army, colour guards composed of In the parades of the 1950s, this configuration was present in every unit of the