The Save Project as RFA tool of the Savers group in the Misc. Families toolset will save the entire project out as external Revit Family Files (.RFA). After the ribbon button being clicked, the command asks for the output location first.
Then, the entire project will be saved out as a RFA file into the folder. After that, the folder as specified above will be opened in a Windows Explorer and the output file highlighted for checking.
Color and material are not addressed so far.