Yep, cockpits were changing to black at this period, although the upper 'head rest' section of the seat/top decking frame was, I believe, still Cockpit Grey/Green (no ejection seat in the earlier Meteors).
The pic below shows a Meteor F8 cockpit, which was similar overall to the earlier versions, although the 'spade grip' on the control column was now replaced by a conventional hand grip. Note, however, that the main section of the column still has the outer frame on each side of the column, represented by the 'tubes' on the Tamiya kit part.