In literature, the term "ember" is often employed as a vivid color metaphor to evoke the warm, fading glow of a dying fire—a symbol of both lingering passion and inevitable loss. Writers use it to conjure images of gentle, almost melancholic shades, as seen in the phrase "pale ember," which suggests a soft, diminished glow imbued with wistfulness ([1]). Other authors emphasize its inherent vitality and intensity by likening it to a "ruddy glow" that, like a live ember, pulses with transient energy against the dark ([2]). In particularly evocative moments, the image of "a red ember or two" scattered in pitch-black surroundings encapsulates the fragile persistence of hope or memory amid overwhelming darkness ([3]).