I’ve tried this method with both the Celestial Reloaded and the Preference themes. On CR, it works like a charm. On Preference, the image-bullet appears one line above the following text. As if it’s imparting a hard-return.
Is there a work-around to get this working as well as it does on CR?
Depends on the theme and how lists are coded. My guess at the top of my head is that the Preference theme has different coding for lists than does the other. Also, because this is custom stuff, you’re kind of on your own for doing that kind of thing 😛
The thing is, Preference already uses images for the unordered lists, so I would recommend you check out the style.css for how I did it and simply duplicate what I did, although take note that I used an image sprite (a single image with all the list images on it and used positioning). Starting with line 642