I used to write a lot of code with a fullscreen transparent terminal window over a low-contrast desktop background, like a misty mountain or a nebulous celestial object. The code was clear close up, but distant bystanders could also appreciate the wallpaper. It felt magical, like I controlled the computer so deeply that I could summon and dismiss text directly over the nature scenery of my choosing -- zero pixels lost to menus or borders. It was beautiful!

This works really well until your transparent terminal is overlapping some other text, or worse, another transparent terminal!

Beautiful as it was, I eventually stopped setting this up.

Same goes for OS terminals, it was fun for a while in Enlightenment, but really not usable.