Oooh, I love Jessica's wedding ring! Meh on Eric's, though. It' sweet that they have the matching rubies, I guess, but it's just not my style.
Eh, I think Katherine Webb's wedding ring is probably just reflecting some yellowish/greeninsh light, and could possibly even be picking up some tones from the rose gold.
I agree, I don't really see her ering and wedding band going together, but I've never been a fan of enormous eternity rings paired with an ering, let alone a huge halo. Maybe she's not planning to wear them together? I do like the concept, though, with the pink diamond outlining white, and I think it could be quite nice on its own.