<P> Subtractive color systems start with light, presumably white light . Colored inks, paints, or filters between the watchers and the light source or reflective surface subtract wavelengths from the light, giving it color . If the incident light is other than white, our visual mechanisms are able to compensate well, but not perfectly, often giving a flawed impression of the "true" color of the surface . </P> <P> Conversely, additive color systems start with darkness . Light sources of various wavelengths are added in various proportions to produce a range of colors . Usually, three primary colors are combined to stimulate humans' trichromatic color vision, sensed by the three types of cone cells in the eye, giving an apparently full range . </P> <P> RYB (Red, Yellow, Blue) is the formerly standard set of subtractive primary colors used for mixing pigments . It is used in art and art education, particularly in painting . It predated modern scientific color theory . </P> <P> Red, yellow, and blue are the primary colors of the standard color "wheel". The secondary colors, violet (or purple), orange, and green (VOG) make up another triad, formed by mixing equal amounts of red and blue, red and yellow, and blue and yellow, respectively . </P>

The primary colors of pigment are cyan yellow and magenta true or false