Developers can cause the Pie Chart labels to appear floating in mid-air by setting this property and BorderColor to Color.Transparent.
Label background fills are not supported by 3-D Pie Charts.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2