I am looking for information on the designs of Emperor Palpatine's chair from Return of the Jedi (1983).
There is information available about who designed the chair Palpatine uses in Episode III. I'm looking for similar information regarding his throne in Episode VI.
I find it interesting that at some point somebody changed the leather pattern on the chair so the back matched the seat, instead of having contrasting strips like in Joe Johnston’s sketch and the initial sculpture. They also carried the padding up to the very top of the chair, whereas in the sculpture there was a dark void that framed the crown of the Emperor’s head, rather like an anti-halo. Was that meant to have a glowing panel installed at one point like in the Johnston sketch? I can see how that might make lighting his face difficult on set.