Style switching at runtime

[HO-COOH]

Recently I came across this feature in CharacterMap UWP app, go to settings >> Look & Feel >> Design Style(at the bottom of the page)

And I think about it, it might not requires app restart and I think of a way to do it in runtime.
I can make a GlobalStyleSelector that defines a static instance, and emits property change event when the style changes. And any control that can change style can x:Bind its Style property to it.
The syntax would look like this

        <Button x:Name="myButton" Click="myButton_Click"
                Style="{x:Bind local:GlobalStyleSelector.GetStyle(local:GlobalStyleSelector.Instance.CurrentStyle.Value, 'MyButtonStyle'), TargetNullValue={StaticResource DefaultButtonStyle}, Mode=OneWay}">
            Click Me
        </Button>

You can look at my demo project for details.

It's a bit too verbose to write. Please share you thought or maybe some better ideas?