From the same as yereq; yellowishness:
see HEBREW yereq
H3422. yeraqraq
יְרַקְרַק (Sta§ 156, 234) adjective greenish, pale-green (compare Assyrian ra‡ra‡‡u, ZimBP 37) — Leviticus 13:49; Psalm 68:14; feminine plural יְרַקְרַקּוֺת Leviticus 14:37; — of plague spots 13:49; 14:37; as substantive Psalm 68:14 the green-shimmering (Che) of gold.