ColourPop Shaken is a warm brown with a metallic finish that is limited edition and retails for $4.50. 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 less shimmery, darker, warmer.