Color Before Quality_Boundary, Differentiation, and Chromatic Legibility

Color is often treated as a qualitative deliverance of perception: one first sees red, blue, green, or gray, and only afterwards asks how such qualities are represented, caused, or experienced. This paper argues that such accounts begin too late. Before any determinate hue can be stably read as the color of something, chromatic appearance must become legible within a bounded structure of differentiation. The claim is deliberately limited. I do not offer a general ontology of color, nor do I argue that perceivers first explicitly detect edges and only then see color. The thesis is structural rather than temporal: stable chromatic appearance requires that differentiation be organized in a way that allows a region to be recovered as a locus of color. Two limit cases help fix this lower-bound condition. In the Ganzfeld, homogeneous stimulation undermines stable chromatic assignment; in neon color spreading, boundary organization can generate assignable chromatic regions that outrun local chromatic input. Taken together, these cases suggest that chromatic legibility depends not on stimulus taken in isolation, but on recoverable field organization. On that basis, I propose an analytical vocabulary of white, black, hue, rainbow, and transparency as limit, stabilized, and non-closed modes of chromatic legibility. The contribution is modest but consequential: a phenomenological account of the minimal structural condition under which color can appear as assignable at all. The claim is structural and diagnostic rather than empirically exhaustive.