There are some details here about the way they've been using computer generated illumination: http://theconversation.com/how-we-restored-harvards-rothko-murals-

There are some details here about the way they've been using computer generated illumination: http://theconversation.com/how-we-restored-harvards-rothko-murals-without-touching-them-35245 http://theconversation.com/how-we-restored-harvards-rothko-m...