If you're on Windows, there are any number of free utilities that control the transparency of an arbitrary window. And others that can toggle any window to be

If you're on Windows, there are any number of free utilities that control the transparency of an arbitrary window. And others that can toggle any window to be "always on top", or not. I imagine similar are available in other environments. Particularly if Windows, just be sure to research enough to find a reputable utility, in each case; the space for such utilities contains some good ones but also numerous more dubious entries.