The main difference between Greek and Roman art was the purpose the art was meant to serve; the Greeks had a great appreciation for aesthetic beauty and the philosophical theory behind it. Whereas Roman art was used to illustrate wealth and were more so decorative.
A derivative of cinnabar was used. The cadmiums took over. The cadmium range of colors, including cadmium red and yellow are made from cadmium sulfide which is a metallic component with a little selenium.
