How do you theme an autocomplete dropdown I'm trying to theme an autocomplete dropdown from a textfield. In this case the autocomplete is provided from the finder module. 

I need to theme it beyond just simply adding css. Ideally I'd like a theme function to override or a template file but I can't find one.

I have tried using the theme function which is provided by the finder module, however all that does is theme the resulting page, not the autocomplete drop down.

Can anyone advise?
To theme the Drupal 7 finder autocomplete dropdown take a look at this video. Generally you write PHP into the 'Rewrite' settings on the advanced options of the finder. I would avoid using the theme() function, it might be obsolete.

To theme the Drupal 6 finder version, you may find this article helpful. It uses theme functions.