Each polyhedral class owns a unique color family. Representative color is a fixed anchor. No deviation permitted.
Hue overlap between polyhedral classes is structurally prohibited. All derived colors must be computable from the anchor.
Vertical links must be rendered as a one-directional gradient from lower-layer color to higher-layer color. Reverse gradients imply false authority inversion and are prohibited.
Horizontal links retain the same color family as connected nodes. They differ only in luminance or saturation. Any hue change is a structural violation.
Red, Yellow, and Black are globally reserved. They must not appear in normal vertical or horizontal structures under any circumstances.
While the color logic and structural semantics defined in this document are immutable, the perceptual realization of color remains intentionally open for refinement — subject to Color Master review, within constitutional constraints.