ColourPop Basic Instinct is a warm brown with a metallic finish that is limited edition and retails for $6.00. In comparison, Natasha Denona Rosewood (51M) is a warm brown with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Rosewood (51M) is 85% similar — it is more shimmery, lighter, cooler.