I would've really liked that one. It's the perfect replacement for Onua's trans green. Onua Mata was originally meant to have GITD eyes, and apple green/trans bright green looks a lot like GITD glow.
That said (and I've been saying this for a while) if trans dark blue (Onewa's eyes) and trans red (Matau's eyes) are too dark to be used as colours Lego should really make an apple green equivalent for them. Trans neon orange is usually used for "red eyes" but it often feels too fiery, lacking the cold, creepy ferocity real crimson eyes have.
Ideally, I think a group of 6 Toa should have at least 3 eye colours. I think 6 different eye colours kind of undermines their unity, though.