Elite void knight top
This item comes in three colours: White, the Void Knight Guardian; Grey, the Void Knight Justiciar; and Black, the Void Knight Executioner. The stats do not vary from set to set. The colour you get at the end of the quest is determined by the decisions you've made in the quest's series.
If you wish to change the colour, take it to Commodore Tyr and bring 100,000 coins.