Are these Cacatuoides eggs fertile?

[macdav07]

I took this photo after about an hour of adding a drop of malachite green and not sure if they're fertile or not. Some are definitely opaque-white, don't know about the rest. This is her 3rd attempt so if they're not fertile I might give up.

 

[Mike Wise]

Fertile apisto eggs can vary in color depending on what the female is fed. I do have a question for you. Why did you add a drop of Malachite Green, a dye that is used to kill invertebrates? I'm also curious about your breeding method.