I wish you all the best in obtaining matching emerald green hammer tone paint. It might be easier to get a green VC Sports or put up with the mounting holes on the Mustang base.
Back on the Impala 2, it looks like it came with the same hammer tone as the first VCs.
As for the absence of a thumb latch button in illustrations, the only explanation is they hadn't finalised the final points when they took the pictures. Only the shape of the catcher.
