LED bulbs can damage paintings (vrt.be)

A doctoral thesis reports that some museum lighting—particularly LED bulbs emitting high levels of blue light—can alter certain chrome-yellow pigments used by artists such as Vincent van Gogh and Paul Cézanne. Using X-ray analysis, researchers found that unstable forms of chrome-yellow in works like “Sunflowers” and “Portrait of Gauguin” can change color within days under such light. The study advises museums to reconsider using LEDs over paintings to avoid damaging color changes.