X-editable uses the default checkboxes as can be seen in this example.
What I want to do is wrap the template responsible for creating the checklist with my own class (<div class="...
) that will take care of styling the elements as I want.
Looking at the themes part on the source code did not help me a lot.
How can I achieve this?
The worst way, probably, is by editing the source code. In this case the templates for the checklist are created in line 3225. So if you alter them depending on what you need it should be ok.