I'm using Acebug 1.9.1 with firebug 1.9.1 on Firefox 10.0.2 Mozilla Firefox for Ubuntu on Ubuntu 11.10 Unity, and everything else in the add-on works beautifully, but I am unable to select a theme. I use textmate themes and bundles in Sublime Text, so I'm familiar with installing those, but didn't see any instructions about doing so in order to use themes with this add-on. Do they need to be installed somewhere or are the themes included with the acebug add-on?
Themes are included by default and available under the Acebug options menu. It seems like there is some issue with selecting themes from there ... thanks for the bug report!
fix #35 Themes option not working.