Im afraid that your silver laced Orpingtons aren’t pure. Yellow legs on one of the chickens being a big indication of that.
It is a known fact that multiple people breeding CrazyEweFarm bloodlines have reported yellow legs popping up. Due to yellow skinned breeds being used to introduce Silver-lacing to the Orpingtons I am not concerned about the two breeding birds who's lineage goes back to CrazyEweFarms visually being yellow-legged, nor am I debating whether or not they are pure Orpington.
What I am questioning is how in the world, six, visually Silver-laced birds have managed to produce what appears to be Silver-laced, White, apparent Gold-laced down that later feathers in Silver, and what to my untrained eye appears to be Chocolate and something Partridge/wild-type-esque with the stripes that are obvious on a few of the chicks?
Sterling and Duchess (original pair with yellow legs) have, in the twenty or so chicks I've hatched out, produced only Silver-laced chicks and the occasional chick that has Gold-laced down that as they grow and feather in turn Silver-laced.
@nicalandia believes there is a strong dilution on the gold gene that may be resulting in Citron or Creme-laced, similar to Sebrights.
With the addition of the four unrelated birds that are visually white-skinned (Hollywood, Mel, Sue, and the other no named rooster) I now have a virtual chocolate box of chicks hatching out. These are the first eggs that were set after they had been introduced to the flock. I have another nine eggs (all developing) at home that will be hatching out the 10th of August. Someone else has six eggs (all developing) a few days behind mine. Obviously I'll document what I hatch out, but it would be nice for me to let the other person know what is going on when she hatches out a bunch of random colored chicks.