On Vision and Colors are, however, nonessential properties that differ according to the type of light-refracting substance that is used. The top of the upper image is violet. Below the violet is blue. The bottom of the lower image is orange. Above the orange is yellow. In this way, along with the white disk and the black background, four prismatic colors appear: violet, blue, yellow, and orange. This is in disagreement with Newton's claim that there are seven prismatic colors. As the upper image overlaps black, it is seen as violet. Where it overlaps white, it is seen as blue. As the lower image
Train of Many Colors Train of Many Colors The Train of Many Colors (also referred to as TOMC) is one of the New York Transit Museum's IRT nostalgia trains used for excursions. The name comes from the fact that the cars are painted in many varying schemes from different eras. During the 2004 Subway Centennial, some of the cars were used for regular service on the 42nd Street Shuttle route. In addition, the cars may be used to commemorate a special occasion (e.g. the opening of CitiField in Queens). Some of the cars are housed in the New York Transit Museum when not used