I'm not sure what you mean? Most of the more popular well-done themes on there give you the UI elements, and examples of how to put them all together as various

I'm not sure what you mean? Most of the more popular well-done themes on there give you the UI elements, and examples of how to put them all together as various types of pages/UIs. For example, here is just a quick top selling one I found: http://trystack.mediumra.re/ http://trystack.mediumra.re/ - It includes all the elements broken out, and then ways to form various UIs with those elements. Is that not what you are looking for? Did I misunderstand?