This "feature" is reminiscent of Opera 12 where browsing and private browsing tabs could be in the same window, and the glasses-hat icon was used to distinguish between the two. Now though, private browsing has its own window, so there's no need for the icon as it makes browsing annoyingly harder; the icons displayed should be the icon of the website. I don't want to opt out of a browsing app with good potential just because of an icon. I'll still use incognito, I'm a pretty private guy, y'know? At least add the option to switch the icons.
Also the option to remove the keyboard clicking noises.