Customizing button styles

[evac]

Is your feature request related to a problem? Please describe. Everything is great out-of-the-box but there doesn't seem to be a way to customize the button styles.

Describe the solution you'd like It would be nice if we could have something like confirmBtnStyle and cancelBtnStyle to customize the button styles.

Describe alternatives you've considered There's the custom type dialog in this package too but I'd prefer not to have to recreate all the predefined styles just to tweak the border radius and shadow on the buttons.

Additional context Just want a simple way to customize a couple button style properties to be consistent with other buttons in my app.