Add the possibility to set the StatusBar Background, icons and text, not only the color

[acaliaro]

Actually using StatusBarEffect.Color is possible to set the status bar color, but is not possible to use LinearGradientBrush (or is it possible but I don't know how...).
Is it possible to add "Background" so we can also use gradientbrush colors?
Also text and icon colors should be useful to change

Thanks