Themes are for SeaMonkey 1.1 and 1.0.x; 1.5a/2.0a/suiterunner trunk builds are not supported.

To install, first extract contents of tarball (tar.bz2 file).

Then, open the included html installer page with SeaMonkey, and follow the instructions. 

Windows users can extract the files with the Free 7-zip app: http://www.7-zip.org/ (with 7-zip in Windows, it may be necessary to extract twice: if the first extraction results in "filename.tar" then run it through 7-zip again).

I assume users of GNU/Linux will need no instructions for extracting; but the command "tar -xvjf filename.tar.bz2" may prove useful. ;)

To update an existing theme installation, you may simply close SeaMonkey, navigate to your profile, and overwrite the old theme-name.jar file with the new theme-name.jar file.  Alternatively, you may wish to uninstall the theme from within SeaMonkey (in the Edit > Preference > Appearance > Themes dialogue), manually remove the old theme-name.jar file from your profile, and then install the updated theme.

After the theme is installed and selected, type "chrome://global/skin/about/about.html" in the urlbar for subskin information, etc.

Many thanks to VectorLinux for hosting these!