In their defence, that's how windows usually work on (err...) Windows 7, apps usually have the top bar and sometimes something more where transparency is allowe

In their defence, that's how windows usually work on (err...) Windows 7, apps usually have the top bar and sometimes something more where transparency is allowed (there's a system setting for setting the amount of transparency, or none). I don't see a problem since the tabs are not transparent, just with a small gradient like Chrome, and it's probably not going to be possible to add things (icons from extensions?) to the main controls of the browser.