I am generating a Redhat 6 build which uses kde4. The standard is to have two monitors and for those monitors to have a black background. I have been trying to configure this during build but have a problem.

If I edit the file /usr/share/kde-settings/kde-profile/share/config/plasma-appletsrc to this:
[Containments][1][Wallpaper][image]
wallpaperplugin=color
wallpapercolor=0,0,0

I get one monitor background changed to black. The other has a pattern, 'air' I think.

Anyone know how to force both (or all) monitors to have a black background.

I need to do this during build, no clicky-pointy stuff.

Thanks