Those Sources are linked to a Device -- in this case that device sounds like it is a GPO trigger that is controlling the video servers via the Roll Clip function tied to a GPO.
They go Green because the Menu system on the panel is changing to that sources "menu" and the Green signifies that association. There is no way to stop that. press the dissolve button or the wipe button.. you will see the menu change and those buttons will be green while the menu is on that function.
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Les O'Reilly
Director - Switcher Product Management
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