Hey I got this over the weekend and didn't notice the babies until I got home. Its neone green colored in person this is with flash. Interesting the difference in color... maybe it was damaged at one point not sure.
I did a little reading today and they do this... there are like 18 described species of fungia.
Sometimes they die and months and months later little babies will pop on the skeleton and form new ones. I saw a nice one at Ali's shop do this a while back. So if you have a fungia die, don't throw it out, put it i n the sump or the back of the tank as months later it might surprise you.