Theme Builder 2.x and earlier stores theme data as XML files on disk.
The files are located in the
/config folder as follows:
builder-global.xml- the global theme settings reside in the
builder-space.xml- the space-level theme settings are within sub-folders that are named after the space "key" for the associated space.
If you delete these files, the default settings will be used.
When upgrading to Confluence 2.3 or above, ensure that the
/config folder is copied across to the new instance of Confluence in order to retain the theme settings.