I was unable to find the SOP. When I finally did, it sounds like I was worried about nothing. I was going off of what I was told from the breeder.I didn't completely understand your PM. So they're heritage but you're having problems with color leakage? How odd I wouldn't expect them to have any. I'm still learning and have only seen the ones my friend has but hers were incredible. What do you mean by the pullets having a spot last hatch? We are really wanting some nice heritage stock and DH2B likes the Rocks. Originally we planned to try white rocks but couldn't find heritage so we got hatchery. The cockerals were awful! Just dumb as can be and terrible to the girls they were the first ones we processed. We also lost several to predators. Then we met the SPR and PR that my friend raises(she doesn't have a partridge rock roo so runs both colors together) I love her birds they're incredible! Big and impressive! She also has HRIR. Unfortunately the eggs we got this spring were all from the partridge hen covered by the SPR roo. They look very cool but next year we will be getting pure ones after they're separated.
Heritage doesn't mean perfect. It means that they are not from a hatchery, and are being bred for quality not quantity.
The brown I was worried about at a few weeks is simply what was left over from the chick coloring. I saw it as a flaw. It isn't.