Liber Horne (Google Books ⧉, Amazon ⧉, Bookshop ⧉)

The Travels of Marco Polo

…quoted by Sir F. Palgrave from the Liber Horne, it is forbidden to paint on gold or silver except with fine (mineral) colours, “e nient de brasil, ne de inde de Baldas, ne de nul autre mauveise couleur.”