Romance heroes could literally blacken their faces to become Saracen monsters

Evidence

In Guy of Warwick, dark skin functions as a Saracen marker—an image that appears repeatedly in the text. It is seen when the hero disguises himself in blackface, where “Guy prepares the reader to associate blackness with Islam” by dyeing his hair and face black, taking on an “Eastern personality.” The Saracen monster in Warwick resembles the executioner in the Luttrell Psalter, described in the text as “a fende, pat comen were out of helle.” — Sophia Rose Arjana, Muslims in the Western Imagination, 210

Categorization

• SEED: The blackface-as-Saracen-marker motif is a strong thread for an essay on how identity in medieval romance was a surface you could paint on, showing the Muslim monster as a costume rather than a reality.
• QUESTION: Does this blackface convention in medieval romance have any continuity with later minstrelsy, or are they independent inventions of the same marking logic?