In literature, pistachio is more than just a nut—it’s a subtle, refined green that evokes both the natural and the exotic. Writers have used this hue to add depth to their imagery, as when a description refers to “the minor Pistachio, weirdly oriental in color” to suggest an unexpected, nuanced tone [1]. In another instance, a delicate green is achieved not solely through flavor but also through its chromatic suggestion, as an author instructs to “color it a delicate green” reminiscent of pistachio [2]. Similarly, the soft, natural green of a pistachio nut serves as a striking metaphor for a face marked with quiet character, blending elements of nature with human features [3].