How to change hover style in Metro UI?

Question

WPF

There is a class that inherits Button and adds additional logic to the button according to the tasks of the application. No matter how much I struggled, it seems that the OnPointerEntered event fires before some magical hidden event that overrides the mapping of my colors to the colors from the theme.
Actually, the question is, how can I teach the button to change color from the C # code the way I want, and not globally written in the theme?

Answer 1

The question boiled down to: "How can I access a static property from XAML in code."
To do this, in app.xaml a class with a static property is added to the resources:
And in the right place it is accessed, for example like this:

Background="{Binding Instance.Color, Source={StaticResource Foo}}"