The background color of the button changes to the color specified by this property when the mouse click is released over the button. This property is only used when the WebHtmlEditor.ButtonMode = ButtonMode.Image.
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