To me, it appears she doesn't have developed ears yet in the early pics so they're skin color and in the newest pic, I see pink edges. I have a few hatchery birds with mixed ears where the edges are red and the centers clearly have a white or buttermilk shade to them. My red sexlink has really obvious mixed ears and she's supposed to have been from RIR and RIW (which should both have red ears...) I'll get a pic later if you like. Truly, ear color and egg color are independent, though. The only reason they ever correlate is by human preference and selection of traits.