 A comparison of the "restored" and "unrestored" figure gives strong evidence that Michelangelo worked over this figure in a wash of carbon black, and that the technique was preplanned.The bright red used on the robes of Daniel and the Libyan Sibyl does not, on its own, create effective shadows.In these and many other cases it appears to have been intended as underpainting, to be seen only through a thin black wash and with the deepest shadows picked out in more intense black, as they still are on the Cumaean Sibyl.