Many early-medieval manuscripts had only orange and green (for initials and for drawings).
Many later medieval manuscripts had only red and blue (popular for titles and capitulum symbols).
I don't know how many of the "orange" colors in early-medieval manuscripts are faded reds and how many of them were intended to be orange.
Many later medieval manuscripts had only red and blue (popular for titles and capitulum symbols).
I don't know how many of the "orange" colors in early-medieval manuscripts are faded reds and how many of them were intended to be orange.

