Colour ====== .. toctree:: :maxdepth: 3 colour.adaptation colour.algebra colour.appearance colour.biochemistry colour.blindness colour.characterisation colour.colorimetry colour.constants colour.contrast colour.continuous colour.corresponding colour.difference colour.geometry colour.graph colour.hints colour.io colour.models colour.notation colour.phenomena colour.plotting colour.quality colour.recovery colour.temperature colour.utilities colour.volume