I've moved this spathulata to more light and is truly yellow to the eye now. No yellow green at all in person. Has pink tips. Grown from a frag in my tank.
Man I have something very similar to this but it has a blue tint in the base color where its shaded from light. And instead of yellow its more of a cold on the coralites. Pink tips and a green in the base. One of my favorites! And also grown from a frag.
Alan reef that Millie looks pretty green in the picture.