You can select a skin
for the FLVPlayback component by clicking the value cell for
the skin parameter in the Component inspector.
Then click the magnifying glass icon to open the following Select
Skin dialog box, in which you can select a skin or provide a URL
that specifies the location of the skin SWF file.
Skins that are listed in the Skin pop-up menu are located in
the Flash application folder /Flash Configuration/FLVPlayback Skins/ActionScript
3.0. You can make new skins available to this dialog box by creating
them and placing the SWF file in the folder. The name appears in
the pop-up menu with a .swf extension. For more information about
creating a skin set, see Create a new skin.
For skins that you assign by setting the skin property,
either by setting the skin parameter during authoring or with ActionScript
at run time, you can assign color and alpha (transparency) values
independent of choosing the skin. To assign color and alpha values
during authoring, open the Color picker in the Skin Select dialog
box, as shown here.

Color picker in the Skin Select dialog box
To choose the color, click a swatch in the panel or enter its
numeric value in the text box. To choose the alpha value, use the
slider or type a percentage in the Alpha text box.
To assign color and alpha values during run time, set the skinBackgroundColor and skinBackgroundAlpha properties.
Set the skinBackgroundColor property to a 0xRRGGBB
(red, green, blue) value. Set the skinBackgroundAlpha property to
a number between 0.0 and 1.0. The following example sets skinBackgroundColor to
0xFF0000 (red) and skinBackgroundAlpha to .5.
my_FLVPlybk.skinBackgroundColor = 0xFF0000;
my_FLVPlybk.skinBackgroundAlpha = .5;
The default values are the last values chosen by the user.
If you want to skin the FLVPlayback component using the FLV Playback
Custom UI components, select None from the pop-up menu.