Natasha Denona Industrial (45M) is a warm taupe with a metallic finish that is permanent in palette and retails for $29.00. In comparison, Make Up For Ever ME554 Gunmetal is a warm taupe with a metallic finish that is discontinued and retails for $21.00.
Make Up For Ever ME554 Gunmetal is 90% similar — it is less shimmery, warmer.