the color and texture looks like it is done by MAO, quite similar to Able and Skog.
It's written in my message you quoted: it's a cerkote (ceramic) finish : )
yes I know.
I showed the image to a guy working with an aluminum factory where many customized mechanical keyboards are produced, he told me it is MAO.
Then I do some Google and I found cerkote and MAO should mean the same thing. cerkote is the name of the result, while MAO is the name of the processing.
Whatever I'm not too care about the fact actually cause I didn't see it in real life, so I may be wrong.
My favorite is the anodizing white FJELL. I saw some before, they are really damn beautiful.