How can I remove Green background

[asya]

When I launch qt applications I see the application being drawn on top of the green background.

How do I change background's color? Is there any way to remove it?

The platform I'm running allows overlaying frame buffer on top of video stream with hardware alpha blending applied, so I need to make this green background to be transparent.
In other words I want to make background have the color with alpha = 0.

[jpn]

See QWSServer::setBackground().

[asya]

See QWSServer::setBackground().

That was easy. Thanks.