ColourPop Romance Novel is a cool lavender with a metallic finish that is limited edition and retails for $6.00. In comparison, ColourPop Nouveau (Fade Into Hue) is a cool purple with a frost finish that is limited edition and retails for $4.50.
ColourPop Nouveau (Fade Into Hue) is 90% similar — it is more shimmery, darker, cooler.