I used the program "Resource Hacker" to modify Firefox's manifest. I essentially removed the line that says it will run on Windows 10, which is the only way I know of to make transparency work on the browser windows. It worked, but the windows have this strange white tint to them. The tint seems to be rendered as an actual layer [as seen in the last screenshot] so surely there is a way to remove it? I'm not sure if it would be under "about:config" or if it's something I have to use Resource Hacker for again. [NOTE: The same white layer also applies to Thunderbird, which obviously is built