This is very cool extension for Your Browser it will switch off All light and let you watch videos and media and very cool preview, You also can see slideshow images, etc more and more this is chrome extension it will add a black bulb icon to top of your google chrome browser when you will click on it it will switch off all lights. So fo What you are waiting get this extension here
The entire page will be fading to dark, so you can watch the video as if you were in the cinema.
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 chrome 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