The Ballad of Klorahks

"There's a terrible ochre that lives in that cave," said Sir Gallant, the White Knight.

"A what?"

"He's beaten a merchant's train black and blue.  The watchmen caught him red-handed.  We'll have to draw him out.  When he's more readier, we'll clash for sure.   Not you; you're too green yet.  But he'll show his true colors.  His type bleeds easily, and that kind of cowardice doesn't come off in the wash."  Sir Gallant handed his squire a small bottle.  "That's when you'll need to use that."

"What is it, sir?"

"Bleach with color guard.  It'll stop him from running."