jackn123Hey Jackn123,
Sadly no, it'd be pretty impossible to take the K7XX apart to that degree and re-assemble it with those parts. Further, AKG won't sell just the parts so even if we had the capacity and desire to deal with the thousands of resulting support tickets, wouldn't be able to do it anyway.
Thanks for your question,
jackn123I got a pair of k712 rings and headband to put on my k7XXs. You just gotta buy em through AKG. You could technically get any color theyve released, just gotta find the part numbers. It wont be cheap though...