thanks to Mozilla the userChrome and the userContent .css files are saved
LONG LIFE to the chrome folder and to the UI customization !

Styled+ for Firefox  is (Desktop\Windows all) 

 - Multiprofiles\Multieditions:  the setup is optimized for the Stable release and Beta editions, you can have the same or different Styles on multiple profiles but also on different editions:                                                use the setup for the Developer, Nightly, Portable, pointing to the right profile location.                                 Your touch - you can edit the .vbs files in the "Styles" folder and recreate the autostart feature:                        in the last line >>  WshShell.Run "Firefox.exe", 2  << add the proper full path to the  "Firefox.exe" process          - the port to other OS and\or devices will be very welcome -

- Independent: actually Mozilla is not officially supporting the resurrection of the chrome folder resource therefore will not officially approve my "add-in&out" -

IF YOU ALREADY USED SOME PERSONAL .CSS CODES:                                                                                                        the Operations Center (OPCEN) is organized in many separated sections and the Style Manager will became the base of your personal fun, you can save the changes on the fly with a mouse click , the new backup of the chrome folder will be saved in a separated folder (the attached date and time will prevent to overwrite them)

BEST OF ALL IF YOU WAS A COMPLETE THEMES (wanna be a full styles) DEVELOPER :                                                     you can mod and replace very easily every internal image and .css code, just respect the folders tree structure and send me the chrome folder, I will send you back the new compiled "yourStyle.exe" ready to share with all the FFlovers

                                         yes all the .css codes are clearly visible and editable !