He was tall, gaunt, with a pale skin and sunken eyes the color of a kingfisher's wing, neither blue or green.

In literary terms, tone denotes the author’s feelings or stance toward the subject matter and the audience. This tone is established by writers through various literary devices, including diction (word selection), syntax (the arrangement of words in sentences), imagery (vivid descriptive language appealing to the senses), details (facts that are either included or left out), and figurative language (which draws parallels between seemingly unrelated subjects). In the specified excerpt, “He was tall, gaunt, with a pale skin and sunken eyes the color of a kingfisher's wing, neither blue nor green...,