My eyes are sensitive and I prefer to read white text on dark background, like the old terminal days. Most apps and web sites are black text on white background, so I use the option iPad Settings > General > Accessibility > white text on black, which really just inverts the color of the entire screen. This is great for ui and text, but obviously just horrible for graphics and videos. I'd like to be able to quickly toggle this on and off on the fly. I want to map it to a button, like double click of home button, or a gesture, like touch top left and bottom right at same time. I jail broke my iPad, but so far have only used it for backgrounder. Is what I want possible? Thanks, this would be hugely useful for me.