When dark theme is used, sliders (especially progress on fullscreen) tend to look a little too dark (as if they were disabled). To overcome this, add an option to force them to be 20% brighter.
Since GstPlayer pipeline ref count is now fixed by a patch, fast seeking option can be enabled. In my tests this seeking method is over 10x faster then normal seeking on some files, but the video time you end up with might differ up to few seconds from the value requested.
