MAC Darling Clementine is a warm orange with a matte finish that is limited edition and retails for $19.00. In comparison, ColourPop I Ain't Bad Atcha is a warm orange with a semi-matte finish that is limited edition and retails for $7.00.
ColourPop I Ain't Bad Atcha is 95% similar — it is less shimmery, lighter, cooler.