Everytime a new Kermit is made, they change the design very slightly. The early Kermit from season 1 of The Muppet Show didn't have many articulation points on the photo puppet so they couldn't make him do as much as they wanted. There were wires through the arms and legs so they could bend and the mouth was permanently open. Over the years they have modified him to achieve more expression and let him seem to be "realer". The Kermit we see now is based on the one Jim used during the late 80s and the one they have pretty much used ever since. Do notice that some official Muppet photos of Kermit taken with a photo puppet don't quite right since the 90s. Check out the eyes. Is it just me or do they seem to have lost a little of Kermit's warmth?