The mural in Cave 45 of the Mogao Caves, "The Transformation of the Sutra of Perfect Nirmāna", is not only the pinnacle of Buddhist art during the Tang Dynasty, but also a treasure trove of color aesthetics with profound symbolic logic. Its color system transcends the simple decorative function and constitutes the core visual language for constructing a sacred space, advancing the narrative rhythm, and conveying religious philosophy. However, the protection limitations of the physical cave and the aging of the pigments pose challenges to the complete understanding and in-depth experience of this color system. The research focuses on the digital translation and immersive reproduction of the color system of the "Transformation of the Sutra of Perfect Nirmāna" in Cave 45. Firstly, it systematically dissects the material composition, symbolic system of the mural colors, and their roles in space and time within the narrative of Unborn Anger and Sixteen Views. Secondly, it explores the technical path of high-fidelity color acquisition, material reconstruction, and dynamic rendering based on virtual reality (VR) technology. Finally, it innovatively proposes the Color Narrative Interaction framework, using color changes as a key interactive medium to drive the user's immersive experience, understand the sequence of contemplation, and achieve emotional resonance.