With one click on the lamp button, the page will be fading to dark. And automatic focus to the video. Click again, the page will return back as normal.
Few great features in this Opera extension:
✓ Turn the lights back on, by clicking on it
✓ Support multiple video sites: YouTube, HTML5 video,... and more
✓ Support multiple image sites: Picasa,... and more
✓ Easter Eggs:
Shortcut key: T -> Do you like a real movie theater?
✓ Option to make the screen dark if the user click on the play button
✓ Option to turn on/off the fade in and fade out effects
✓ Custom colors
✓ Option Flash Detection
✓ Option Show Dimness Level Bar