Digital technology is profoundly changing the ontology of color, as its essence evolves from physical pigments to virtual pixels, posing a fundamental challenge to the traditional color cognition system centered on life drawing. This study aims to investigate this profound shift in the concept of color. It argues that the transformation of teaching models is not an isolated educational reform but an inevitable response to this ontological change in color itself. By analyzing the new characteristics of digital color, such as its data-driven nature and translatability, and by combining this with specific creative case studies, this paper explores practical pathways for guiding art creators to establish "cross-media color literacy." The core objective is to illustrate that contemporary color practice has transformed into a creative dialogue between the perceptual abilities of traditional media and the critical thinking skills required by digital media. This research hopes to provide a reference of both theoretical depth and value for contemporary color theory research and artistic practice.