On 2018-09-15, J.F. <j...@p...onet.pl> wrote:
> Dnia 15 Sep 2018 09:48:59 GMT, XL napisał(a):
> Tylko malarskie nie nadaja sie do tkanin.

Na bezrybiu...
https://en.wikipedia.org/wiki/Dyeing

The earliest dyed flax fibers have been found in a prehistoric cave in
the Republic of Georgia and date back to 34,000 BC.[3][4] More evidence
of textile dyeing dates back to the Neolithic period at the large
Neolithic settlement at Çatalhöyük in southern Anatolia, where traces of
red dyes, possibly from ocher, an iron oxide pigment derived from clay,
were found.

No chyba, że generowali we włóknach, w co watpię.

> Tak usiluje sobie przypomniec zielone flagi.
> Wlochy, ale to gdzies od 1797, Bulgaria - jeszcze pozniej,
> Wegry - tez pozno.
>
> Kojarzy ktos starsza flage z zielonym ?

E-e, ale były też już wspomniane:
https://en.wikipedia.org/wiki/Natural_dye#Greens

If plants that yield yellow dyes are common, plants that yield green
dyes are rare. Both woad and indigo have been used since ancient times
in combination with yellow dyes to produce shades of green. Medieval and
Early Modern England was especially known for its green dyes.

--
Marcin