Change shape of WPF button without changing other styles

Question

I would like to change the shape of a WPF button from the default round rectangle to another shape (say, an arrow), but I want to keep the rest of the styling -- fill color,

Answer 1

If you want to inherit the default system colours/styles for a Button you can use TemplateBindings within the button Template. For example, if you wanted to create a custom-shaped button that had the same background colour as the system one, you could use the below:

The Ellipse will then inherit the background colour from the Button, however it is set.