WPF - Toggle Button - Beveled Effect

I've been trying to create a toggle button with a "simple" bevel effect for my WPF Window. At first I've tried to apply the BevelBitmapEffect but apparently it is not deprecated and there are no visual changes when applied. I've have tried many other "tweaks" with no success.

The kind of button I'm going for is something like this:

Edit: I was able to create this effect by having two pictures (unpressed and pressed). Still, if anyone knows how to do this without any external resources that would be great.

Thank you!