Sydney Grace Charming Chaos is a cool taupe with a metallic finish that is limited edition and retails for $6.25. In comparison, Natasha Denona Maxi (458M) is a warm taupe with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Maxi (458M) is 95% similar — it is less shimmery, warmer.