Warpaint

From Lexicanum

Warpaint is dyes and paints which Wyrdboys produce and rub on themselves in the hope that some of their magical powers will be dissipated. It also has the handy effect of giving him a chance of surviving an incoming psychic attack. To this end Wyrdboys are often seen in bright colours, making them easy targets on the battlefield.

Sources

• Feral Ork Army List