Research into chromatics has been on track and has become the foundation of modern chromatics since Newton published his color theory. A look at any mainstream chromatics works may show the color system, which is a carrier of chromatics. Studies of Newton and Goethe's color theory and Runge's color view, therefore, can indicate their respective directionality and connotation. Discussions based on Newton's physical color circle, Goethe's physiological color circle and Runge''s color ball help to understand how modern color system is preliminarily constructed.