GREY is GREY?

Farrow and Ball are free with colour descriptions eg. elephants breath, Charlotte's locks, etc. Hardly a precise - a hint of a tint.
A fellow blipper has recently unfairly fallen foul of this problem. Their car is now the above Cinzento rather than anthracite?
Must check which grey mine is ? Whatever it had the treat of new oil etc. today.
Abstracted from the earth.
The granite I think is perhaps local to them.