who did a detailed analysis in 1933 to revealed that earlier restorers had " acted with a great deal of restraint " ?
A summary of the relevant statements of Colalucci , in the order that they occur in the Appendix entitled " Michelangelo 's colours uncovered " is as follows : The elderly restorers who had taken part in the restoration of the 1930s were interviewed as part of the preparatory process .