I certainly haven't seen one before in that colour Chris, other than the plain black that some of the Mk1 Uno's were painted in. Great colour though it is, it must be a pig to keep clean! Black colours show up every tiny bit of dirt, so I guess you must have given it a good clean/ polish before taking the pictures!
And Steve, the other black colours you mentioned, were they available for the UK market or only in South America?