mrfixpl
My pre-pre-facelift C30 (2006-2007) had Climate Control Module with plastic knobs. Top layer started to peel off so I decided to replace the knobs with ones from the facelift interior.
Since CCM module does not require coding or adaptation (as long as the region match) I just swapped the whole module. I'm planning to retrofit heated seats so I don't mind extra buttons on the new module, but if you can find CCM from car with the same optional equipment (MEDIA button, phone, heated seats, AQS...), just swap the knobs alone or remove rest of the peeling coating.