Ah just got a MyHermes notification yesterday that they had received a parcel for me. That explains what it is rather than something I'd forgotten I'd bought for the house.
Hopefully it'll arrive soon. 😎
As said on SELOC, B36 is Norfolk Mustard Metallic / Spice Yellow. They changed its name but colour the same.
It's Norfolk Mustard yellow base coat with a metallic/pearlescent clear top coat.
I need to get mine resprayed to make it perfect again.