do they have a pea comb or a straight comb?...if EE's have pea combs have pea combs they will most likely lay blue/green eggs but if they have a straight comb they can lay any color.
my EE is 25 weeks and has still not laid her first egg but both of my Red Sex-Links started at 16 weeks and some of my Rhode Island Reds started at 20 weeks and now all of them are laying...even my old english game bantams and Japanese bantam are laying... I CANT WAIT ANY LONGER FOR A...