Chemistry puts the color back in art - Science -
"HARTFORD, Conn. - When white masquerades as yellow and green might actually be blue, a call goes out to Henry DePhillips.

DePhillips, a Trinity College chemistry professor, is among a cadre of specialists using cutting-edge science to solve the color mysteries of paintings and other cultural treasures often several centuries old.

Art collectors and museums, including Hartford’s Wadsworth Atheneum, increasingly are turning to DePhillips and other experts to analyze artwork that has deteriorated over time."