Possible to customize colors of my statistic?

Hi,

Today, I set up a statistic which is nicely visible in the Manager. I used the guide: https://support.oneidentity.com/technical-documents/identity-manager/8.1.2/configuration-guide/33

I'm showing a pie chart. The pie chart looks good so far, but is there a way to define the colors of the pie it's pieces? 

Thanks in advance for your response