The notions of Pavor and Pallor would have been connected in Augustine’s mind, because he tells us that they had been made into two gods.
Sorabji identifies Pallor as a Roman deified concept paired with Pavor, which Augustine deploys to ground his account of involuntary pre-passional bodily reactions that precede rational judgment.
, Emotion and Peace of Mind: From Stoic Agitation to Christian Temptation, 2000thesis