Once upon a time in Genoa there was the powerful guild of Seateri ( Setaioli ), in the chapters on the art of the dyers of éndeghi ( indaci ) and silks of the city and villages of Genoa, there were collected the regulations in Latin and vernacular language of the 14th - 16th centuries concerning, among other things, the colors with which it was possible to dye silk drapes, colors that ranged from the morello di grana to the vermilion red of coconilla ( cochineal ), from the negro color of vitriola to éndego ( indigo ), which was one of the most widely used and prized dyeing materials. "Silkmakers " were mostly located in the old city in the area of Ponte Reale.
