My berserker, whom I designed around the complementary colors of the skin/hair (orange and blue) and the armor/weapon complementary colors (yellow and purple).
Actually, I like the hair color, but I personally think a lighter purply-blue would fit the backpiece a little better.
I also would like to see a little more blue in the armor, to match the hair and maybe a different shield, but II have no idea which one would fit this look.