Dye can be used at the Dyer's shop to change the color of cloth or thread. Dye is made by milling certain plants at a Millstone or Quern. Usually all caravans will bring dye for trade too. Importing dye however is only useful if you have a somewhat skilled dyer, otherwise little value is added and the work wasted. Better buy or grow the 'source' plants if available and mill yourself. Of course the nice colours are a value in themselves, if you don't stuff it all in bins.
In theory, dyed objects can be colors other than the basic 16. However, the game displays them using the basic color that is the nearest match (dimple dye is (dark) blue, and emerald dye is light green).
|Dimple cup||Dimple Dye||Midnight Blue|
|Blade weed||Emerald Dye||Emerald|
|Hide root||Redroot Dye||Red|
|Sliver barb||Sliver Dye||Black|
Dyes can be applied either to woven cloth or to the raw thread - there is not known to be any difference in the end product based on the point at which the dye was applied during the production process.