How to change colour of graphs in Visualizer
The Colour of the graphs can be changed. Before the colour change:
After you have created a chart, go to Media > Visualizer Library.
Click edit on the chart already created, select your chart, and on the next page, click Advanced.
Go to Series Settings and there will be your categories.
Click on your category and in the end, you'll find an option: Color.
Choose the colour of your choice and click Save Chart. The colours will be changed on your chart now.
After the colour change: