Icon on Windows 7 taskbar looks good when Chrome is open: <a href="http://i.imgur.com/Axvg4.jpg" rel="nofollow">http://i.imgur.com/Axvg4.jpg</a> and bad when Chrome is closed: <a href="http://i.imgur.com/EnoQt.jpg" rel="nofollow">http://i.imgur.com/EnoQt.jpg</a> (there's white ring that should be transparent)