Changing the colour of the whole line using the Chart Appearance for the line on a qChartView does not happen.
Title
INTERNAL: Unable to change the colour of the line for qChartView SeriesDescription
Resolution
WORKAROUND:
For changing the line of the colour each item of the list has to be entered in the qChartSeries appearance in order to see the change of colour for different items on the qChartView webpart.
STATUS:
Waiting for fix in a future release of Quest Webparts for SharePoint.