Custom Bubble Color and Size:
Bubble maps show data values by the location and size of the circles (bubbles). You can edit the color and size of the bubbles, as well as add a percentage display to this type of map.
To change the color of the bubble, click on the legend and click on the "Colors" button. Here you may select a new color from the list.
In the legend you will also see a Bubble size definition. You can slide the bar up or down to adjust the ratio between the size of the bubble and the value it represents.
Bubble maps have the ability to display multiple pieces of information in a single visualization. The size of the bubble shows the value, and you can add a color gradient to show the related percent. Click on the "+% Add percentages" button to activate this option. For example, in the next map, the size of the bubble shows the number of African Americans in a county while the color of the bubble shows the percent of the county population that is African American.