50 Shades of Clack.
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That last four make me think of this :p
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Haha they're all actually slightly varied in different shades of black and dark grey. They even have their own names but will probably have to ask CC for those.
Black, Dark Black, Darker Black, Darkest Black, Darker than Darkest Black, Really Honestly The Darkest Of The Dark Black I Swear
but are any of those Sinter Black? :O