9 Computer software for color matching, for measurement of color samples, for color formulation, and for quality control and ensuring color accuracy of the device-independent colors of a computer output or input device, namely, a monitor, printer, CRT scanner, digital camera, video camera, spectrophotometer, colorimeter, colormeter or spectrometer light boxes, color viewing apparatus, namely, spectrophotometers, densitometers, photometers, and colorimeters, goniospectrophotometers, reflectometers, and spectoradiometers for use in measuring reflectance, luminance and radiance energy in a spectrum, and apparatus for monitoring and controlling the quality of paper products, comprising an optical sensor, an information display console and an information display