Donna(data66)
We've added a video tutorial for clients https://youtu.be/hyAKmrv12-E which should help you create a theme. This is a basic video not intended for third party developers as you already know how to make one. We had clients confused as to how to make a theme so they can edit it and not break their sites editing default bootstrap.
Here is a link to the developer area mentioned in the video tutorial, https://docs.phpfox.com/display/FOX4DEVDOC/Themes , for those of you that want to do more customizing for your new theme.