"He was a lot of things to me" "The only conclusion was love"
Okay. I got a theories on this. It is possible that the King is White and the Queen is Red because there is a balance between the two side, and when the Red Queen took over (In my headcannon she got help from Cora because it seems like something she would do) she destroyed the balance and made everything red. Because the crown she was wearing had red jewels not white one. So that implies perhaps the Kingdom has had a balance between red and white.
I do think Ana probably killed her husband and made the kingdom her own. I hope Cora plays into it somehow. It’d be great to have her back