1. A method for processing display data comprising text and a background, comprising the steps of: (a) evaluating a combination of the text and background against one or more objective criteria to provide one or more objective values; (b) determining whether one or more of the objective values is beyond one or more respective thresholds that are indicative of text-background combinations that are difficult to read; and (c) adjusting one of the group consisting of the text and the background if the one or more objective values are beyond any of the one or more thresholds, so that the objective values are within the one or more thresholds after the adjusting.