[84] Color analysis is a burgeoning research field in manuscript studies, see e.g., Panayotova et al., Colour: the art & science of illuminated manuscripts; Panayotova and Ricciardi, Manuscripts in the making: art & science; Watteeuw and Van Bos, “Black as Ink. Materials and Techniques in Fifteenth-Century Flemish Grisaille Illuminations by Jan de Tavernier, Willem Vrelant and Dreux Jehan”; Dubois, “Techniques picturales des grisailles dans les manuscrits enluminés des Pays-Bas méridionaux”.