Now that Visual Studio 2012 has a somewhat usable dark theme, I'm starting to actually reduce a bit of strain on my eyes at work.
The problem now is that I have two monitors, generally with a maximized visual studio on the left and a maximized Firefox on the right. All that darkness I'm getting from Visual Studio now is being overshadowed (pun intended) by the brightness of the Firefox window next to it.
Installing a dark theme for Firefox would help a little, but it's mostly the content of web pages that's the problem, not the chrome around them. So I had a thought that it would be useful if Firefox could just go dark when I focus on another window (i.e. turn down the brightness on the content pane so white backgrounds become gray, etc). Does anybody know of an add on that will accomplish something like that?