“And the Priest shall looke on the plague after that it is washed: and behold, if the plague haue not changed his colour, and the plague be not spread, it is vncleane, thou shalt burne it in the fire, it is fret inward, whether it be bare within or without.”
1611 King James Version (KJV)
13:55 If it have not changed its colour - If washing doth not take away that vicious colour, and restore it to its own native colour.