I'm pretty sure from what I've read on the down colors of them the Wheaten chicks are the yellow ones, the one with the stripes was probably Partridge mix, as far as sexing the Wheaten ones you'll have to wait until they get older to know, leg color I don't know alot about, I do know in Araucanas that the leg color can change up to 4 months. Also does it say anywhere if they are to be a white skinned bird or a yellow skinned bird? I don't think I've saw that when I've been researching, don't know if its different for the different feather colors of them or not, just a question I have. I'm guessing they are white skinned. I have not looked at the Soles of my birds feet to see, just catching them for that alone I don't think I'll mess with, I'll look them over better when I get them moved to a permanent Coop with an enclosed Yard area. Congradulations on your hatch!
Look forward to seeing pictures of them as they grow.
Victoria