Oh I'm getting way too much credit.
I bow before the likes of Henk69, tadkerson and blackdotte as for genetic information..
I don't know why some birds get the neon green earlobes while others don't seem to(when all of said birds have yellow skin and Fm). One hen in particular had blazing neon earlobes and her skin was very purple, easily seen due to being naked necked also. She was very weird looking..
White/turquoise earlobes are just based on white skin. With Fm they can get colored to various shades of blue/turquoise.
That bird has a pretty long tail, silkie and cochin cross "should" tend to have short-ish tails(maybe your silkie looking pullet is this cross?).. I would guess d'uccle based on that.
Hippie, earlobe color has nothing to do with egg color. It is mostly coincidence though that most white earlobe lay white eggs, etc but they are not genetically linked.
Earlobe color is due to several different genes(that is why some have barely any white, all way to extreme like white faced spanish, that white face is sort of a giant big earlobe all over its face).
EE are a huge melting pot of everything. A lot of them do have a "usual look" but they can include crosses from other breeds, especially if bought from backyard persons. Just about the only commonly available breed with black skin are silkies.. would not be surprised if there were crosses with silkies in the EE genepool so I'd assume the black skin was from silkie somewhere in your bird's past. White earlobes could be from silkie, but very many other breeds have white earlobes too, so it could be from those other breeds.. It's just impossible to tell with EE from a hatchery but if you brought from a private person, chances are a "little higher" it has silkie blood in it.
Related to that.. I also have black skinned turkens.. descended from an egg trade. I was surprised(but delighted!) at hatching those chicks. More recently, there has been a flurry of sorts with people deliberately crossing and trying to breed for birds with a particular look, plus the dark skin. I'm trying for large turkens that look like turkens exactly.. except for the black skin..