What color are these Easter Egger chicks??

[hawesjulie79]

I have no idea what color to call these chicks. (Ignore the silkie hen in the first picture; she is adoptive mom of that brood.) Also, any guesses on gender would be appreciated! In the first picture, with the younger chicks, the yellow chick has a grayish tinge that you can't really see in the picture.
Thanks!

 

[donrae]

There is no name for the colors of those birds. Easter eggers are known for being classic "easter egger color", that is, colors that defy definition.

 

[hawesjulie79]

Thanks! I was totally confused by their coloration. What about the sex? Any ideas? I see on some threads that people say their color is linked to their gender, but I can't find any rules on this out there. The two older chicks are supposed to be (sold as) pullets, but the brighter-colored one acts like a roo...
Here is another picture of him/her:

 

[RoostersCrow HensDeliver!]

How old are they? The big EEs appear to be pullets just going off comb size/color. The soft brownish colored one is definitely a girl. In the last picture, the color looks a little more boyish but the comb is tiny, I'm not 100% sure its a girl.