Fig. 3From: The book on how to make all the colour paints for illuminating books: unravelling a Portuguese Hebrew illuminators’ manualChrozophora tinctoria, close-up of the fruits, and dyed cloth with the juice of the fruits according to the recipe of the ‘book of all colour paints’; blue after exposition to vapours of urine and purple after exposed to sunlight. Fruits were collected in August and September 2017, near Granja-Amareleja, Alentejo, PortugalBack to article page