(I submitted this idea in the ideas section, but quickly realize it would probably have been better to post it here, and idk how to delete the idea I submitted, so it's too late for that)
To explain what exactly I want. I want it so that websites can set a transparent background, and so it will be transparent, *without having to further change your userChrome*. My current thought is that this could be achieved through making the background transparent instead of the usual background, when you turn on browser.tabs.allow_transparent_browser, however, that might be problematic to some existing websites or things like that (if they forgot to / didn't set a background color).
I have no idea how one would implement such a thing, and as such, this is more of a question than an actual suggestion.
The reason I want this is so that transparent parts of websites (transparent in the sense of being able to see your desktop/etc) would be easier to make accessible.
If someone has an idea of how to implement something like this without any changes to firefox, please let me know.
