Unless the blue and splash birds are Australorps, I'm not seeing any of those breeds in the pics. I'd have pegged the blue and splash birds as Marans, but they're clean legged...
anyway, they look healthy, that's a start. If you're looking for green or blue egg layers, look for birds with pea combs. They'll often also have a beard/muffs and dark legs, but the pea comb is closely linked to the blue egg gene on the chromosome, so they're often together.