In the first six minutes of the film, the Ranger Frank Mattison is being chased by bandits and is shot off his horse. While on his horse, he was wearing all black clothing. When shown on the ground, however, he is wearing all white clothing.
At about the 35 minute mark when Clay sits to write down the brands on the cattle he saw, the hands shown writing are wearing black gloves, but Tim Holt is wearing light-colored gloves.