Any chance to do it without getting the old start menu?And what about my request for a custom program? I don't mind paying for it. The problem is that this lies beyond the scope of Aero Glass so I don't have appropriate knowledge to make this. It could be probably easy if accent color could be changed, but I'm not sure if it is possible just by altering SetWindowCompositionAttribute arguments (and you would not have glass effect in this case, only pure transparency). Hmm I understand the problem, just tested start is back and that could lower the colorization transparancy lower then Control Panel\Appearance and Personalisation\Personalisation\Colour and Appearance What I actually want to do is to copy/remake the chrome os taskbar for my new win8.1 theme. If that's not possible is it maybe possible to make the taskbar colorization solid when a window is maximized and less transparent when a window is below it?