Dataviz Colour

Choose and assign colours for a specific chart (or a colour-formatted table). Use whenever a visualization needs a palette - picking series colours, assigning hues to categories, checking a palette for accessibility, honouring a brand palette, or seeding colours from a source chart during repair. Decides which colours to use from an available set and how to assign them, by contrast, adjacent-series distinctness, colour-vision-deficiency and grayscale survival, and focal-colour-plus-grey emphasis. Brand or style guidance, whether from an installed brand skill or supplied in the prompt, takes precedence over defaults, but a specific graph still needs a which-and-how-assigne…