Color theory primary colors work at all is that the imperfect pigments being used have sloped absorption curves, and thus change color with concentration. A pigment that is pure red at high concentrations can behave more like magenta at low concentrations. This allows it to make purples that would otherwise be impossible. Likewise, a blue that is ultramarine at high concentrations appears cyan at low concentrations, allowing it to be used to mix green. Chromium red pigments can appear orange, and then yellow, as the concentration is reduced. It is even possible to mix very low concentrations of the blue mentioned and
Orange (colour) the colour of transformation. A wide variety of colours, ranging from a slightly orange yellow to a deep orange red, all simply called saffron, are closely associated with Hinduism and Buddhism, and are commonly worn by monks and holy men across Asia. In Hinduism, the divinity Krishna is commonly portrayed dressed in yellow or yellow orange. Yellow and saffron are also the colours worn by sadhu, or wandering holy men in India. In Buddhism orange (or more precisely saffron) was the colour of illumination, the highest state of perfection. The saffron colours of robes to be worn by monks were