Natasha Denona Electrick (364M) is a cool blue with a metallic finish that is limited edition and retails for $29.00. In comparison, Coloured Raine Opulence is a cool blue with a glitter finish that is limited edition and retails for $6.99.
Coloured Raine Opulence is 90% similar — it is more shimmery, lighter, cooler.