Froggy, just a thought. The hatcheries have been known to ship the entirely wrong breed out. Given you say the color is wrong, the body type is wrong, and this one doesn't look like any of the others, is it possible it's an entirely different breed?
Started getting some pullet eggs Wednesday, guess some of mine have decided to ignore the mean old broody hen and lay some eggs. I sure wish this broody would give it up. her comb is almost a grayish color after 5 weeks of sitting. But she seems determined to stay on the nest. Altho in the last couple of days she's quick to leave the nest when I call everyone for scratch or garden refuse, which she hadn't been doing before.
After all my complaining tho, I hope she goes broody next year, when I want to get some SS eggs to put under a broody. LOL, I got SS this year cuz I thought they had more of a tendency to go broody. If they do, maybe I'll want some other kind of eggs, not sure I want more than 3 broody hens at a time.