I get the feeling these days as the name associated with a particular paint as it gets increasingly more exclusive, the costs of the paint probably rises to reflect the association, irrespective of it's actual cost to produce and apply.
One of my favourite.naming conventions was Jaguar's my father had two in Opalescent Silver Blue, basically a light metallic blue.although I don't recollect even from new it had these characteristics:-
,
Opalescent describes a lustrous, milky, or pearly appearance that reflects shimmering, rainbow-like colors, similar to an opal gemstone. It indicates a surface that changes color depending on the angle of light, often described as iridescent or shimmering.
By the way there is nothing wrong with some of the BL period colour paint, the only problem was they forgot to really apply much of it to each car. ( too much of a good thing).......