Do keep in mind that my opinion isn't worth the paper it's written on.
I really think the one that is gray is starting to involute.
I really think the other might be beginning to ulcerate and other parents will have to tell you what to do about that.
I'm with the ped ophthomologist at this point. You can never tell if it is going to grow or not. Do monitor it very closely and ANY changes that happen, photograph them and call the doctor.