What are the steps to reproduce your problem?
1. Create a combined report based on two single number reports.
2. Change the colors of the reports and save the report.
3. Edit it again and rearrange the reports using drag and drop.
4. Save the report and edit it again and look at the colors.
5. When I change the color for the report it also changes the wrong one sometimes.

What is the problem?
Colors that are selected do not match the configuration in the chart.
See attached screenshot.

What would be the expected behavior:
Colors in bar chart should match the ones in the configuration on the right hand side.

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