Antennas are pretty useless here in the mountains. There are several tall mountains between us and the nearest local transmitter.I don't know the details of you setup, but I doubt the color problem is the TV. How do the colors look with an antenna?
I set the Picture Mode back from Cinema to Standard and skin tones look more natural now.
I have to use the optical output for my bluetooth hearing aid adapter.For audio, I'd skip ARC and just run a optical line to the receiver.