This is a great work! I'm using only these colours for a Charlemagne's portrait I'm doing. If you are interested I'll post the link to the final result here. Most fitting since I'm using contemporaries descriptions of the emperor and have researched the emperor's attire from carolingian miniatures, so this colour palete is proving to be trully useful.
I'll inmediately send you the artwork when finished, hope you'll like it. I'm also interested in using the Carolingian Minuscle, and other of the caligraphic samples you posted in your gallery, for some current and future artworks.
Thanks! I try to research what I'm drawing, both if is historical or based on a lore.