You could also possible use CSS, again in a child theme or with the custom CSS Jetpack feature
I’ve just updated the Spine theme to use Foundation 4.
You can download it by clicking the button below
The big change is that everything can be customized with Sass. Foundation now uses mixins for everything from grids to buttons.
It also means less unnecessary classes and divs.
I also added a contact form template.
The menus are a bit special: the primary location uses the Foundation top bar, which is the most flexible, allows for 3 levels of dropdowns…
The secondary menu uses the Foundation sections menu, which replaces the navbar menu.
This requires you to wrap the top level menu items with a custom menu link item with a # URL, so basically it’s good for sites that has different sections. It supports one level of dropdowns.
I always welcome feedback, so if you find a bug, let me know.