Firefox 159

I just installed Firefox 159.0.1; Private Windows now appear with the top of the window (tabs, address bar, Bookmarks Toolbar) in what appears to be dark mode. Is there a way to turn this off? Thanks.

Edit. Apparently the solution to my problem is to open a tab, type about:config (and acknowledge the warning), then search for browser.theme.dark-private-windows and set it to false.

My next question is how to turn off the lavender tint to the window?