How can I change the NavigationView Pane background??
I'm trying this way:
<NavigationView.Background>
   <LinearGradientBrush EndPoint="0.5,0" StartPoint="0.5,1">
      <GradientStop Color="#b1c899" Offset="0"/>
      <GradientStop Color="#18c1b9" Offset="1"/>
   </LinearGradientBrush>
</NavigationView.Background>
But it seems to have "acrylic" that I can not remove, as well as changing the background color of the Header.