Since your design looked strikingly like my design, I'll add some suggestions.
Try adding a bit of blue (like 2 or 3 notches) in the background and the border, gives it a more cold look.
I would recommend my "shadow" E, but that's just going too far.
Try blue or green (just a hint), it should make it slightly different.
If you're looking for a total colour change, try for a Steel Blue and Black set.