The Missal of Cardinal Angelo Acciaiuoli

Use of yellow pigments

Artists' Materials

In the letter shapes of the initials themselves and in the border ornamentation, however, lead-tin yellow is substituted on some folios by a lead oxide or by a yellow dye, which in most cases are also mixed with azurite to provide green. These differences suggest that the letter shapes and borders were completed by assistants, while the main artists painted only the images within the initials and the large figures or heads occasionally found in the borders.