Thank you for that pic! In the AOTC making of book, Gavin Bocquet explained how they were showing Palpatine's growing darkness with a growing amount of dark colors in his office. In TPM it was mostly red, in AOTC greys were added and he said they wanted to show him in ROTS in a room with all blacks and greys. I thought they didn't go for it until now, because I completely missed THIS one. They really did it. Thank you, HevyDevy.