I don't have a screen of anything using it but I understand what he means. A simple example: http://s33.beta.photobucket.com/user/hfsktr/media/temp_zps28422b0b

I don't have a screen of anything using it but I understand what he means. A simple example: http://s33.beta.photobucket.com/user/hfsktr/media/temp_zps28422b0b.png.html http://s33.beta.photobucket.com/user/hfsktr/media/temp_zps28... a media player that has the options in the image linked. Which is on and which is off? I usually guess that darker is selected but occasionally the lighter option is the one that is on. When it is a binary question the selection is clear (or when there are other options to compare to). The few times I've seen the options is for something like styling in a game (classic/new).