The colors are very vivid.
Dual roles were over-done, in my view. Larry Storch played a Russian and a Quebecois fur trapper. Forrest Tucker played his character's father. Ken Berry played an outlaw. But that camera trick was an integral part of the 1960s -- from Bewitched, I Dream of Jeannie, The Patty Duke Show and The Parent Trap to Elvis' Kissin' Cousins movie.
References to the 20th century abound -- from a drive-through horse-wash to a British Invasion-like singing group, The Bed Bugs.
The featurette on disc #6 is enjoyable. Given that Larry Storch did a commentary on The Phil Silvers Show 50th Anniversary DVD collection (and replicated on the series box set), I'm surprised that he did not make a contribution here.
The lack of episode commentaries is not a deal-breaker for me. The commentaries on The Dick Van Dyke series by Dick Van Dyke,. Rose Marie, Larry Matthews and Carl Reiner were great. In contrast, the commentaries on The Adventures of Superman and Monk were a snooze, "I remember filming that".
I wish that Ken Berry had not moved to Mayberry. More seasons of F Troop would have been what the captain ordered.