My answer would be "just faintly".
Most of the issue is that light coming in through the grill reflects off the copper colored cone. I even get this effect on my SongTowers, because the black material is smooth, shiny and clean, so I get little reflection spots. I always think my grill has dust on it, but its just that reflection.
You can faintly see the white of the rest of the driver.
My wife doesn't like the "open driver" look but with grilles on she likes the look of the speakers. I label it a non issue myself.