Change the Visual Color Metric
You can change the metric used to determine the colors used on a visual while you are viewing it. (If you want to alter the defaults used by a visual, make your changes on the Visuals tab of your data source configurations.
To change the color metric while you are viewing a visual:
Select the color metric directly on your visual. A Color dialog appears.
Select a new metric to be used to determine the colors on your visual.
Select the aggregation function that should be used with the color metric: SUM, AVG, MAX, MIN, or (for some data sources) LAST VALUE. See Metric Aggregation Functions.
The visual renders using colors determined by the select metric and its aggregated values.