app.background
This property gives access to all background attributes but it can not be used directly.
app.background.inColor
Returns and sets the in color property as boolean.
app.background.inColor = true
Returns and sets the intensity property as float. The properties range is from 0 to 100.
app.background.intensity = 50
app.background.intensity
app.background.Color
Returns and sets the screen color property as RGBColor.
app.background.Color = "{RGB 107 69 77}"