Proposed Canon
The only known way of reversing this change is for the unit to Croak and be subsequently Decrypted. This causes a "subtle realignment" that seems to mentally or spiritually heal them of the damage dealt, without necessarily causing them to forget it.
 Known Ashen Units
- Lookamancer Misty of Gobwin Knob
- Thinkamancer Maggie of Gobwin Knob (though she may be a case of Albino Signamancy)
- Foolamancer Jack Snipe of Gobwin Knob (Since cured via Decrypting)
- Thinkamancer Willis Circle of Follywood
- Carnymancer Dove Barstool, Barbarian
It's possible that a Signamancy Spell, similar to but opposite the one that was used on Slately in the Siege of Spacerock could be crafted to temporarily return the caster to their previous appearance.