Documentation

Category Colors

This section will be revealed in the Format Visual tab if you have added data to the Category field. All categories identified by this visual will be displayed in this section, allowing you to assign a specific color to each category using the Power BI color picker menu.

Once you select a color for a specific category, it will be applied as the fill color for all nodes within that category. Furthermore, if the Pie Charts on Nodes setting is enabled, the category colors will be applied to their corresponding pie chart slices.
When using Cluster Nodes, category colors will not be applied to the cluster. However, if your selected Max Clustering Zoom Level permits the user to expand clusters into separate nodes, each location node will use their category-specific color settings.