03-22-2018, 02:53 AM
Reds can be achieved with cochineal and madder, a modern kermes, it creates a cool (as opposed to warm) red color, almost purple. Blues: indigotin reduction dye bath, minerals like azurite. Greens, a blue over a yellow, or verdigris, and other copper compounds applied as a paint.
Qui sepeliunt capita sua in terra, deos volantes non videbunt.
--Flavius FlavĀ