I really have to post the pics, don't I?
And this is the in-game model:
https://wow.zamimg.com/uploads/scree...mal/789836.jpg
So No, her eyes as the Night Warrior were always dark blue.
And as I told you, the player eyes also used to be dark blue like Tyrande's, but they were changed to black in Shadowlands:
https://it.wowhead.com/news=317784/n...are-now-darker
For the entirety of BfA, the "Night Warrior" eyes for playable night elves were dark blue. How did you never notice this, even though you seem to be so interested on this topic?