I tried it couple of days ago. It seems that every icon, picture etc would need to be converted to HAM, so that they would look good.
Yeah you'd need to patch the icon loading to be able to map to ham.
The background picture would have to be updated every time an icon moved to pick the best base colour for the right hand edge and then update the r/g/b channels, you'd have to make sure you didn't overwrite a base colour change though. There might be more rules you'd want to add to try to reduce the amount of visual change in the background when icons move. If you want transparent icons, then the right hand edge wouldn't just be for the icon but for any transparent pixels that follow an opaque pixel.
It is possible to code something like that. Good luck finding someone to do it.
You'd be better off using a video mixer and framestore.
