1. A method for registering color deviations on printing materials produced in printing material processing machines having prepress stages, the method comprising the following steps: registering actual values on the printing materials being produced with a color measuring instrument; analyzing image data from the prepress stage with regard to coloring in a printed image on the printing materials, with a computer; and during the analysis in the computer, organizing the image data from the prepress stage into image types, allocating set points to the image types and correspondingly comparing the set points with the actual values registered by the color measuring instrument on the printing materials being produced.