Albert Barnes Commentary Leviticus 13:56

"And if the priest look, and, behold, the plague be dim after the washing thereof, then he shall rend it out of the garment, or out of the skin, or out of the warp, or out of the woof:" — Leviticus 13:56 (ASV)

Somewhat dark - Rather, somewhat faint. Compare Leviticus 13:6.