.bbtheme is BB theme
Key Features: .BBTHEME File Extension
What is an .BBTHEME file?
The bbtheme file extension is associated with the BB bulletin boards.
The bbtheme file contains settings, colors and images used on whole forum board as a skin. No further information could be found.
This bbtheme file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.