I used a mixture of gold and red to achieve the sorta metallic orange of this warrior's armour. I needed the change from the usual Slaanesh pastels. ;-)
I wanted good contrast between the warrior's pale flesh and the armour. I think I suceeded.
You succeeded with the contrast effect and the face is very good. Overall colour choice doesn't do it for me though. Purple-red (face), orange-red (armour) and pink-red (gloves) kind of clash and the odd dash of green thrown in doesn't help. Maybe it's the whole Slaanesh thing I'm misunderstanding :)