EE for sure, EE's can have yellow legs as well, EE's are a mixed chicken, with the blue egg genes, there are occasional EE's that don't have beards or muffs, depends on which breed is more dominant. Here's a little info.....
Easter Eggers (EE): A very very very common type of chicken sold by hatcheries. This is NOT a breed, but rather an unregulated mix that tends to share general features. Most of the time anyway. Because it's not a breed, they can come in all colors, in all sizes, with all types of combs, laying all types of eggs, with all kinds of personalities, etc. Generally speaking, the 'ideal' EE should have: a pea comb, lay blue to green eggs, have a beard and muff, and have willow colored leggs. But, as stated before, nobody is reinforcing or regulating them, so hatcheries can mix, match, substitute, edit, remove, swirl, and generally do whatever the heck they want with the genes.
Ameraucanas: A fairly young breed that many believe was developed from EE stock. This breed of chicken can only come in one of the following colors: Black, Blue, Blue Wheaten, Brown Red, Buff, Silver, Wheaten and White. NO other colors. The Ameraucana MUST have slate colored legs, a pea comb, have a beard and muff, and lay blue (to bluish green) eggs. This is a very strict and exacting breed, and is fairly rare, despite hatcheries lying left and right about selling them (really they are selling EEs).