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can i apply different themes when using multiple profiles?

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I need to use multiple profiles in Firefox. I would like to apply different themes to determine which profile I'm in. How can I do that? Every time I try, it changes for all profiles.

I need to use multiple profiles in Firefox. I would like to apply different themes to determine which profile I'm in. How can I do that? Every time I try, it changes for all profiles.

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If you try to start another instance without using the -no-remote command line switch then you only open a new window in the current Firefox instance and you will still use the same profile. So it sounds that this is happening in your case.

You can copy and paste this JavaScript code in the Code input field in the Browser/Error Console (Firefox/Tools > Web Developer;Ctrl+Shift+J) and click the Evaluate button to see the path of the currently used Firefox profile folder.
Click the Clear button to remove existing messages to avoid having to scroll to the bottom.

Components.classes["@mozilla.org/file/directory_service;1"].getService(Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile).path;