Where as Dalek Caan, or Dalek Sec is a Name of a Dalek, the Supreme Dalek is a Title. It's not his uniform he is changing it's a different Dalek. The Supreme Dalek gets destoryed at the End of journeys end.
If the question refers to the 1964 story "The Dalek Invasion of Earth", there are 2 "liveried" Daleks:
Saucer Commander -- Black dome and alternating black and silver panels on the skirt.
Mission (or Fleet) Commander -- Black all over (apart from details).