ColourPop Knee Highs is a warm red with a metallic finish that is limited edition and retails for $4.50. In comparison, Natasha Denona Purpure (147M) is a warm red with a sparkle finish that is discontinued and retails for $29.00.
Natasha Denona Purpure (147M) is 85% similar — it is more shimmery, darker.