5 links have been added on this idea.
  1. Scientists in Turkey have discovered a way to extract natural, sustainable dyes from plants.

  2. Check out this company that uses colour-producing microbes to dye textiles naturally.
    https://qz.com/pigment-producing-microbes-eliminate-chemicals-textiles-1851004469

  3. Green tea can also be a source of natural dyes.

  4. Synthetic dyes are highly toxic and one of the largest sources of environmental pollution. Replacing them with natural dyes is thus a very amazing idea.