I’ve always been angryÃ‚Â that Youtube never had a dim-the-background feature. Sometimes using full screen just can’t work, like when I want to use two monitors or when I want to read something in a different window and let the video proceed. So, dimming the lights allows me to get rid of that annoying white background without changing it with Firebug.
Oddly enough though, they added this just a few days after they released a major project, Youtube XL. XL wouldn’t need this feature, it is designed for TVs and single-tasked environments but finally is time that Youtube added an excellent feature.
The feature is implemented with a light box. They could be using the inherit problem with flash overlays, where they don’t overlay without special poking. The little light bulb is what toggles the lights. The other button, the arrow, is the same as it is in the flash view port. It opens a new window for the video, like the old days of going full screen.
Good job Google.
I’m pretty sure they took this little addition away. I haven’t seen it since then; it’s been replaced by new window.