Don watercolor paintings inevitably fade over time?
Not mine. It’s true that watercolors in previous centuries were often painted with colors made from vegetable dyes and other materials that were prone to fading. Some artist still use these “old master” colors out of respect for tradition. But I use only the most permanent modern pigments such as phthalocyanines, quinacridones, and benzimidazolone. These have the very best light-fastness ratings and should last for many centuries. My watercolors are at least as archival as oil paintings. You should still keep them out of direct sunlight, which can damage any artwork.