Two versions of Dutch artist Vincent van Gogh’s “Sunflowers” at the National Gallery in London. (AFP Photo/Leon Neal)
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Vincent van Gogh's "Sunflowers" are losing their yellow cheer and the unsettling apricot horizon in Edvard Munch's "The Scream" is turning a dull ivory.Some of our most treasured paintings are fading, warn experts who would like more money for the use of sophisticated technology to capture the masters' original palettes before the works are unrecognizably blighted. Much more science is needed to understand the chemical reactions that cause color changes in canvases, to stop them, said Jennifer Mass, an art conservationist from Winterthur Museum in Delaware, who also attended the meeting.In this case, it was a varnish applied after the artist's death that became cracked and faded over time, obscuring the picture underneath.According to Janssens, a further role of science could be to beat the drum for art conservation.
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