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the majority of natural dyes are derived from plant sources: roots , berries , bark , leaves , wood , fungi and lichens . [ ] most dyes are synthetic, i.e., are man-made from petrochemicals. other than pigmentation, they have a range of applications including organic dye lasers , [ ] optical media (
dyes tyrian purple and crimson kermes were highly prized luxury items in the ancient and medieval world. plant-based dyes such as woad , indigo , saffron , and madder were important trade goods in the economies of asia and europe. across asia and africa, patterned fabrics were produced using resist...
https://en.wikipedia.org/wiki/Dye