It depends on genetics and the luck of the draw. Easter eggers are crosses. You don’t know exactly what genes you are playing with. Since roosters don’t lay eggs, you really can’t tell about what egg genetics he will pass on.
There are three different possible outcomes. If he is pure for the blue egg gene, which means both genes at that gene pair are blue egg genes, all his daughters will lay green eggs with those hens.
If he is split for the blue egg gene, with one of the genes at that gene pair being the blue and the other being white, about half his daughters will lay green eggs.
If he does not have any copies of the blue egg gene, where both are white, none of his daughters will lay blue or green eggs from those hens.
If any of them do lay green eggs, with those hens you will probably get a fairly wide range of shades of green.
If the rooster has a pea comb, the odds are really good he has at least one blue egg gene to pass on. That’s not an absolute guarantee but I would really like your odds if he has a pea comb. Good luck!