If you need more than 16 colors or you want to apply your own colors to the chart, you must define a custom palette. A custom palette let you add your own colors in the order you want them to appear on the chart. This type of palette is especially helpful if the number of series in your chart is unknown at design time.
This property has no effect when the Palette property is not set to
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)