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Old 11-11-07, 11:38 AM
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PhilS PhilS is offline
Join Date: May 2003
Location: Sargentville, Maine
Posts: 222

If an ET painting turns black over time, it isn't the tempera that's at fault. The artist probably used fugitive pigments. Bad water could also be the culprit -for instance, chlorine turns ultramarine black, though I doubt chlorine was invented back in 1819...
I've seen egg temperas in Italy from the 1400s where the colors were almost as bright as brand new.
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