ColourPop Thingamabob is a cool silver with a metallic finish that is limited edition and retails for $4.50. In comparison, Natasha Denona Glam Green (18M) is a cool pewter with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Glam Green (18M) is 80% similar — it is less shimmery, darker, warmer.