Change the Colors of Geometry Shapes You can change the colors of geometry shapes when no default colors are specified in the Grammar pane. Right-click a map visualization and select Layer. This example shows how to adjust the color for the storm line overlaid on top of US Counties. Description of the illustration maps_geodatatype_layer_color_to_change.png Select a color, and then click OK. This example shows the Storm Line is now red. Description of the illustration maps_geodatatype_layer_color_changed.png