Natasha Denona Sienna (50DC) is a warm brown with a sparkle finish that is permanent in palette and retails for $29.00. In comparison, Natasha Denona Mace (255M) is a warm brown with a metallic finish that is limited edition and retails for $29.00.
Natasha Denona Mace (255M) is 85% similar — it is less shimmery, cooler.