Like the Traitor Legion of which they were a part, the Word Bearers, the Sons of Damnation's Terminator Armour was the same colour of spilt blood, a colour often called "Traitor's Red" or "Betrayer's Red," after the Word Bearers changed their colours from slate grey to red during the Horus Heresy. This colour was sometimes worn with black or silver trim. Heretical prayers are inscribed directly into the surface of the Sons of Damnation's Terminator Armour. Often times Sons of Damnation Space Marines are also seen wearing devotional prayer sheets hanging from their armour's shoulder plates -- the blasphemous words of the Book of Lorgar inscribed upon them.