ColourPop Duckling is a warm lavender with a metallic finish that is permanent and retails for $9.00. In comparison, ColourPop Solstice with the Mostest is a cool fuchsia with a sparkle finish that is permanent and retails for $4.50.
ColourPop Solstice with the Mostest is 85% similar — it is less shimmery, lighter, warmer.