Yeah, i found that when you mentioned it. Oh well. :/ I'm surprised it wasn't mentioned on techpowerup or Tom's hardware when they talked about it. I wonder if it was a Thermalright OEM/factory design, or if it is an aftermarket graphene coating. I believe that happened before the genuine cryorig c7g came out. There were a couple sellers taking and graphene coating them (or making the coolers black and calling it "graphene coated" since idk how legit it was... But that's just speculation). They sold them before the OEM C7g was officially available. There was a couple of posts here or Reddit talking about them and the comparisons/differences between the 2, especially the box since it came in a c7cu box, and not the custom c7g packing. Also some white fan or the black and white fan from the Aluminum c7, and not the all black c7g's fan.
Either way, it's interesting that it wasn't mentioned previously. Otherwise i probably would have bought both to compare. But I don't want to have to pay shipping from 2 different sellers.
EDIT: grammar