In literature, "outer space" is sometimes employed as a color metaphor to evoke a sense of ultimate darkness and the infinite void. One striking example describes it as "the dead black of outer space… a black beyond conception, black with nothing in it to reflect" [1]. Here, rather than merely denoting a location, "outer space" is used to convey a visually and emotionally arresting shade—a darkness that transcends ordinary black and hints at the depths of both the cosmos and the human psyche. This usage transforms the color into a powerful symbol of emptiness and mystery, enriching the narrative with a cosmic intensity.