War paint

From Ardrana

Magical war paint increases the wearer's natural defenses. The amount of increase depends on the color of the paint, with white being the weakest, followed by yellow, red, green, and gold being the strongest. At least half of the user's skin must be bare to use war paint. War paint lasts for a week or more, and is unaffected by rain, extreme temperatures, or the normal wear and tear of the road.

Note: War paint originally appeared in this form in The Complete Barbarian's Handbook for the AD&D game from TSR. Their use here is for the purposes of providing context for the campaign only.