Can I change the colors of Pie charts in popup JSAPI 4.x?

[JanSarata]

Hi folks,

I would like to ask you if anybody knows how to change the colors of pie charts pieces implemented in my JSAPI 4.16 app thru PieChartMediaInfo class -> PieChartMediaInfo | ArcGIS API for JavaScript 4.16 

I found out the pie charts in popup are implemented thru amCharts library but obviously I am not able to get inside to manipulate the colors.

Appreciate any help,

Jan

[klzheng]

Does anyone know how to do this?

For example, if I wanted to change the colors below to white, gray, blue, and green - how would I do that?