Minimal CSS changes needed to just modify the Close, Minimize, and Restore Down buttons

[chrishenzie]

I would like to retain the position of Firefox's tabs at the top of the windows (but still using the OSX themed "Close", "Minimize", and "Restore Down" buttons) to mimic the current Firefox behavior in Sequoia.

I suspect this might require some changes to customChrome.css. While I try to debug this I wanted to reach out here. If you have any pointers on what would need changing to move the tabs back to the top, or to just swap the 3 buttons in the top left corner to be OSX-themed ones I appreciate it.