38. Count Dooku
When you get the late Sir Christopher Lee to play your Sith villain, you give him a dramatic look. Dooku does not have a black cape or robes like his fellow Sith, either: the photos in Dressing a Galaxy actually show that it’s a reddish-brown, with a lighter color underneath as the lining. The chain holding the cape on him actually calls forward to his successor as Sidious’ apprentice, Darth Vader, whose cloak actually does have a chain on it in ROTS. (It’s black, but it’s there.) Meanwhile, his belt is brown leather.
In other words, Dooku actually still dresses a little bit like a Jedi, although obviously not quite to the same degree as he did when he actually was a Jedi. He doesn’t even have a hood, for goodness’ sakes! Galaxy quotes Lee’s emphasis of the idea that Dooku once was a Jedi, which makes us think that these little ties to the light side of the Force were very much intentional on the part of costume designer Trisha Biggar (36-37).
Of course, black dominates Dooku’s palette, as well it should considering his status as Darth Tyranus. For a man who ended up a threat in AOTC before getting executed by Anakin before ROTS was even a quarter of the way over, he has a visually arresting look, to be sure.