Good point, I didn't know you hatched it....Easter eggers can lay any color -- white, brown, blue or green.
EEs are actually not a breed, but a mix that has the blue-egg gene.
Most EEs have puffy cheeks, a muff or beard, and I see that yours doesn't have those...... so I could be wrong... but if you were to get fertile eggs from your rooster and a hen that has a blue-egg gene then the likelihood of blue or green eggs would go up. It's my guess anyway.