Greek sacred art does not treat colour as mere ornament, but as a material with metaphysical weight. Beginning with the etymology of chrōs (“skin, surface, complexion”), we trace ancient and Byzantine colour theory, pigments, and symbolic palettes. From mineral and plant-based paints to gilding and the theology of divine light, you’ll see how colour encoded meaning—whether to evoke paradise, channel protective power, or render theological truths visible. We also examine the survival of these principles in post-Byzantine and folk contexts.