When i'm skyping i cannot change my camera settings to grayscale or sepia, while i know it is possible because i've seen it be done before. I just want to know how to make my camera be grayscale when i am skyping and find how to change those isight settings, because on a mac computer (im on a macbook pro) i see that in the toolbar you can access your isight settings and change the effects (i'm not talking photobooth effects; i mean simple black&white, sepia, negative, etc..) while you are skyping. I dont know how to do this someone please help? 