Show which files have been changed/modified since download

have a look at filezilla for windows, linux and mac. it has a nice implementation of showing modified folders and files.

http://filezilla-project.org/images/screenshots/fz3_win_main.png

Wow, this looks really horrible to be honest :)

i like the idea of showing files in defferent colors.

filezilla documentation:

Identical directories and files (same name and same date and time of the last change) in the local computer and in the remote server : They are NOT highlighted at all.
Directories and files only present in the local computer or in the remote server : They are highlighted in YELLOW in the list of the location where they reside.
Directories and files with the same name in the local computer and in the remote server but with different time of the last change :
GREEN highlighting shows where the most recent version is.
Directories and files with the same name in the local computer and in the remote server but with different sizes : They are highlighted RED on both sides.

Just a little asterisk badge would be perfect, one color for changed locally, another for changed remotely. If you want to go the extra mile, then allow the badges to be customised by the user :)

(although to be honest, if there was the option to automatically sync with dropbox it might make this feature redundant for me at least)

What would be perfect would be an option to view the diff between the current editor buffer and the remote file. If the file has been modified, this diff would show exactly the changes that were made (and are currently unsaved/unuploaded).