They are just promising not to share with the government or any private entity that you are the idiot who had to use a calculator to find half of 17, just in case you were worried about someone finding out.
It’s some fresh hellish bug that Android has introduced, it’ll adapt the theme based on your wallpaper. It’s a bug because it always chooses that 70’s brown color. And yes, before you ask, you’re not able to disable it. You have to reset your theme everytime you change your wallpaper.