Thanks for the comments!
Here\'s how I did the purity seals:
Red: Chaos Black + Scorched Brown basecoat (I have a spare pot of this mixed up), Sanguine Base (P3 paint), Red Gore, Blood Red, and a touch of Blazing Orange here and there.
Paper: Chaos Black + Scorched Brown basecoat, Khemri Brown, Bleached Bone.
-Matt