This is a controversal Design...It is unusal and maybe not suitable for the mass.
I liked the idea of a dirty look and not a streamlined, colourful and shiny one.
I like the Nightmare soulders with the Zodiac breast as they have similar ornaments.
The helmet makes him look like something out of this world and a little creepy but it is unique. The metal on the armor is highly affected by the light and the environement.
I used blue mainly because they fit the skill animations and the legendary shield.
The "gold" also fits the shield very well and it is quite a good match to the sword.
The green is mainly for the orb in the handle of the Whip-Sword.
For the "Steampunk" elements I use mostly the Aether armor and the Chain-Whip-Sword.