I am looking for a way to replicate the "Dim out" or "Turn the lights off" feature (that can be seen on various video sites on the web) into Windows ? This will darken (dim out) the active window. It could be a windows shell extension/plugin or a video player plugin that has this feature.
The reason for I am looking for this is that I have a rather large monitor and doesn't use the whole screen when watching movies.
