Gets the background color of a component.
You can have both a backgroundColor and a backgroundImage set. Some components do not have a background. The DataGrid control ignores this style. The default value is undefined, which means it is not set. If both this style and the backgroundImage style are undefined, the component has a transparent background.
For the Application container, this style specifies the background color while the application loads, and a background gradient while it is running. Flex calculates the gradient pattern between a color slightly darker than the specified color, and a color slightly lighter than the specified color.
The default skins of most Flex controls are partially transparent. As a result, the background color of a container partially shows through to controls that are in that container. You can avoid this by setting the alpha values of the control's fillAlphas property to 1.
'Declaration Protected Read Property backgroundColor As Color