ColourPop Olive U is a warm green with a metallic finish that is permanent in palette and retails for $4.50. In comparison, Natasha Denona Antique Olive (14M) is a warm green with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Antique Olive (14M) is 90% similar — it is lighter, cooler.