It is the pigments that bring color into our lives. They manipulate the incident light and reflect it more or less strongly. The light rays are described by the well-known color spectrum, which ranges from blue-violet to blue, green, yellow and orange to red. Pigments can absorb the incident light, they can reflect it or change it by interference. In all cases, light is always reflected in the entire color spectrum, there are no black holes. Thus, a red colored pigment reflects strongly in the red spectral range and less strongly in the remaining range of the color spectrum.