I think this could use more screens and I would definitely add the colors you used. At first glance one wouldn't think purple and orange would work but it's good to see that you pulled it off.
I would have liked to see more variety in the armor pieces though. Individually they are all great pieces but for this look, they don't all jive well. I think the worst offenders in that regard is the helm, gloves, and boots. I think the boots should have been taller, maybe covering her knees. The gloves are meh but that might not be so bad if the boots and the helmet were changed. Though I'm not sure what I would have used instead. The other pieces are spot on though.
However, if you were going for Greek, as the title suggests I would consider swapping in the Pit Fighter leggings. My Warrior currently has the Pit Fighter leggings, reinforced scale top and gloves, and the splint helm. I forget what his shoulder piece and boots are but the overall resulting look had a very Roman/Greek warrior look going on. You don't have to use that exact make up but you should at least give some heavy consideration to the Pit Fighter leggings.
Black is kind of unnatural for antiquity. Go with natural leather and bronze colors. In fact check out the dye called antique bronze. If anything else, you can match your armor with your weapon set. The color called sand matches them most closely.
