1. Enter four numbers in a column in a spreadsheet
2. Insert Chart, choose Pie chart type, Finish Wizard.
3. Pull out the second, third or fourth pie segment a bit (or do any other
formatting, except fill color, that creates a data point object)
4. Save the chart and reload, activate the chart in the reloaded document
=> the formatted points will get the color of the first series (which is the
same as the first segment)

The problem is in the saved file, i.e. the colors of the data points that are
stored in the content.xml stream are already wrong. (Loading is correct as what
comes up is what is in the file).

See chart2mst3 milestone 11.