1. A process for analyzing colors in a viewing region in an object comprising illuminating the viewing region in predetermined light, scanning the viewing region with a video camera so as to produce an electronic video output for the color values at each pixel location representative of the viewing region, converting the video output into digital data for individual components of the colors, reporting and storing the digitized values in a computer memory, analyzing the digital component values to determine the means value of the component values and the extent of variation of component values from the mean value; and selecting a predetermined variation from the mean value as a tolerance limit for comparing other colors, the tolerance limit being determined as a function of the deviation of the component values from the mean.