brown or red ink

Evidence

"Many of these characters, written in brown or red ink, were arranged in grids that mirrored the form of amuletic magic squares."

Remarks

The 'Turpiana' parchment measures 63.5 by 49 cm and is covered in a complex mix of Arabic, Latin, and Greek letters (p. 12). The ink colors were used strategically; a prophecy contained in a square grid was meant to be read according to its color in a specific order (p. 12). Contemporary critics noted that the enigmatic style resembled alchemist's recipes and medical spells (p. 14).