Changing default file permissions for group? I'm not super familiar with the permissions structure in Drupal 7 so I'm not sure if this is actually an Apache question or a Drupal question. 

I have a style.css file in /sites/all/themes/mytheme/css/ that I need to edit via FTP. That css folder also contains files that are edited via the Omega Tools UI. It appears that each time I use the UI to change style information, Drupal changes the owner of the css folder from ftpuser to www and gives it permissions 754 (group cannot write).

I am okay with the owner changing to www but I need to be able to edit my style.css file via FTP, so I need permissions to be 774. Is there a way I can set a default permissions structure on a folder or on Drupal in general that sets permissions to 774 instead of 754 whenever the system changes the owner of a folder?
I don't believe Drupal or Omega will be setting the default permissions to 754, more likely it's a default that your webhost has configured.  Things I would check would be:


If you upload a file as ftpuser, does it default to 754?  If so, then they have a default permission set to 754.  You could contact the host to see if they are able to change that.
If you manually create a file using PHP, does the file get created at 754? If so, same as above.
If they're created at something other than 754, then it's likely Omega or Drupal that is doing that, but again I don't believe that's the case.


In any event, I've successfully gotten around this problem for many users by integrating a web-based file manager like IMCE, which allows you to manage files without using FTP.