Use buttons when you need interactivity, such as saving a form. Prefer buttons over links, except when navigating to a different page.
You can completely override all default themes.
You can customize buttons ad-hoc without creating an entire theme.
Enable a simple hover or press effect on your buttons. Enable globally by default or per button.
The below effects have motion and may affect people with vestibular disorders.
As with all components, you can disable the theme completely.