I also don’t see why they’re crazy about High Elves especially since they can now play them on the Alliance too.
I totally agree with your suggestion. Give the Blood Elves their blue eyes. The Sunwell is after all purified and once again consists of arcane energies. The eye colour of the Blood/High Elves is dependent on their energy source; green for fel, golden for light, and blue for arcane. And the Void Elves already have blue eyes.