Well, I am not sure if you will ever need image dithering done in flash, but if yes, there are even two individually classes which target this topic. They were developed individually, but do almost the same.
filters
TweenMax
Jack Doyle took the TweenLite and TweenFilterLite classes, put them together and added some handy features. The result is the TweenMax class, or "TweenLinte on Steroids" as the author describes his class.
Some of the extra features you can find in the TweenMax class:
- pause/play
- orient object rotation to bezier path
- AS3 event listeners
- easier sequencing
Check the script's homepage for a more detailed feature comparsion.
The class is free and you are welcome to donate to Jack Doyle.
ColorMatrix
If you have ever tried to desaturate an image using flash filters, you knew that it's maybe not so straightforward as it seems. Luckily there are talented people out there who programmed this neat ColorMatrix class, using which you can desaturate (and modify other values like Brightness, Contrast or Hue) in a second.

