Managing your Style Kits in the WordPress Dashboard
Any saved Style Kits are saved as custom post types and can be exported/imported into any other WordPress site that has the Style Kits plugin activated.
They are located in your Dashboard, under Style Kits → Manage Style Kits
There you will find a list of all the available Style Kits, and you can manage them like any other post entity in WordPress.
Exporting Style Kits
You can export a Style Kit individually, simply by hovering over it on the list and clicking the Export Style Kit. You will download a json file right away. You can also export multiple Style Kits as a Zip file, by selecting them and exporting through the Bulk Actions dropdown.
Importing Style Kits from another site
Importing Style Kits from another site is very easy too, all you need to do is to click the Import Style Kits button on the top, and select either a .json file (if you have exported a single Style Kit), or a ZIP file containing your multiple Style Kits.
Importing Style Kits from the Style Kit Library
Since version 1.3.4 You can also directly download and import Style Kits that are available in the Style Kits library. To import these Style Kits and make them available in your Style Kits list, you need to import them via the Style Kits Library.