When the show opens the women who nearly drowned and killed by the Indians is wearing a bright blue dress, they save her and travel a few miles down the road. When they come back from the opening credits they arrive at their destination except now she's in a red dress and her hair is up instead of down.
The corrals at the Hallock place have a chute to load cattle onto a truck. There would have been no reason for them to have been built at that time.