Just wondering if you've considered adding the new jQuery UI CSS fraework classes to your plugin to make it compatible with ThemeRoller and easy to theme. It's just a matter of adding a few classes and keepign your structural styles separate from the bg, text and border color styles (supplied by the theme)
Here is the info on the framework: http://docs.jquery.com/UI/Theming/API And an article that walk through how the classes are used: http://www.filamentgroup.com/lab/styling_buttons_and_toolbars_with_the_jquery_ui_css_framework/ I worked on the framework and would be happy to answer questions.