Circle Split Update + Source
I've played around with Circle Split some more. Now you can add an image url parameter to the swf. This will make the swf use that image as the source of the colors, rather than random ones. The best thing to do is to see it in action:
Any arbitrary image URL can be used, but only sites that have a permissive crossdomain.xml will work. Flickr and Imgur work, so upload your pics there!
I've also uploaded the source. The files you need are here:
The code is pretty self explanatory and well commented, but shoot me any questions you may have. To get this up and running, put these class files in a directory named "ae" in your as3 classpath. Use CircleSplit as the document class. I just created an empty FLA, 1024x1024, 30 fps, and a black background. This code is public domain, so feel free to use and modify!