Phalanx's eyes are distinctly green as Robin guesses correctly and puts a few pieces together for them. They flap one of their sleeves at him.

"--That sort of thing, that sort of thing! Yes!"

But then the cavern begins to wake up and all sorts of sounds fall down over them. Phalanx is stirred out of their train of thought, color fading out of their features. Their steps slow and they look up, dispersing, until their eyes are empty-doll black again.