A weak argument on your end. There are several blood elves with blue eyes, none of which have had their eyes "fixed" to green to this day. Not a bug.
Also, given that the sunwell comprises both arcane and holy energies we can very well see blue eyes begin to manifest in larger numbers amongst the blood elves... which naturally would be a fitting customization option for them.
You ignored my comment about tattoos, which leads me to believe you realised alliance high elves have no "claim" to tattoos... given tattoos are a known custom of blood elven farstriders and magisters.