Since the unwanted, original background of the image is masked from view,
then you can now change the background image or color at ease.
Switch the Content Manager to the Background tab,
and drag and drop a template from the library to test the applied results.
You may choose to use the original or another image as the background.
Let us change the background color for the actor.
Set RGB = (0,0,255) for a blue screen
Set RGB = (0,255,0) for a green screen