Workbook themes are set of configurable settings that affect all colors and fonts of dashboards and visualizations in a workbook. This configuration also includes setting which among the color palettes will be available for the Color variable in the visualizations. Furthermore, the general colors to be used in visualizations such as axis, background, border, and focus colors can be defined.
On an opened workbook, users can dynamically switch to one of the provided default workbook themes: Light, Light2023, Dark, or Dark2023 . These default themes are independent of workbooks and can be stored externally (e.g., Themes folder in the AppData).
Management of the workbook theme is done in the Theme Settings pane.