Final answer:
The themes in "That Evening Sun" explore racial tension and the fear and passage of time, underscored by the repeated motif of the sun setting.
Step-by-step explanation:
The themes present in the story "That Evening Sun" by William Faulkner are typically representative of the Southern Gothic genre, touching on issues such as racial tension, fear, and the passage of time. The themes often shine through repeated elements and symbolism within the narrative, which serve to highlight the underlying messages and the depth of the characters' experiences. Additionally, usage of the setting, such as the sun setting and descriptions of the evening, often reinforces the story's preoccupation with endings and transitions, both literally and metaphorically.