FA_18C_RWR Background Color

[Bergison]

Hi everyone, I need your help please!

I am trying to show/export the F/A-18C RWR screen with this code in a Config/MonitorSetup .lua file:

FA_18C_RWR =
{
    x = 0;
    y = 450;
    width = 300;
    height = 300
}

The export works, but has a transparent background. All the other MFDs have a black background, and can so easily be shown on separate monitors.
How can I make the RWR background black as well?

Many thanks for your help! Bergison