More than one interactive colour
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Rule · bucket: judgment · severity: note · detector: none · since: v0.1.0
Section: Things to avoid
Group: States and interaction

Forbidden:
  A palette with three brand colours, all appearing on buttons and links

Instead:
  **One** colour marks interactive elements — the highest-contrast one. Additional brand colours are decorative: backgrounds, borders, icons, illustration. A second interactive colour raises a question the user has to answer ("does this one do something different?") and there is no good answer.