Michael, Why not consider the lights that are being used on the van Gogh exhibit in the USA? They are called SoLux and they were designed to provide the best apperance to most paintings at the light levels that are desired in museums. They also have extremely low UV emission. The effect they have on art work is stunning. To learn more about them, please visit our web site. www.soluxlti.com Questions? Drop me a note. Philip Bradfield, Ph. D. VP-Tailored Lighting Inc.