I test the eggs. when I crack them they must be blue inside as well. but I cannot test roos for blue gene. only by mating them to non blue egg layer and then checking if pullets that hatch from that cross will lay blue/green eggs. that would take at least 2 years.
I am out of FB. I posted a youtube video and they cancelled it. I did it again and they blocked me for 30 days. I immediately kicked them out of my life for good. I am not a parrot to repeat only what they want to hear.