Yea I am swaying towards a grey shade like my old Mk7 GTD, I had the wheels done Audi Grey. I really like the Ferric Grey colour in these pictures think they would make the Adalaides look good. Originally I was going to go gloss black but feel the alloys will look lost
Ferric Grey looks good, but then I might be biased as the aftermarket alloys on my Polo GTI+ are Ferric Grey (matt finish)

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I’m not a big fan of gloss black alloys - like you’ve said, they can look lost as the gloss black ‘hides’ the detail of the wheel design unless you’re close up to the car. Additionally gloss black is susceptible to showing swirl marks, and other than when they’ve just been washed, they tend to take on a dull brown-ish appearance from brake dust deposits.
When you’ve had your alloys refurbished and they’re back on your car, please put some pictures up on the forum.