I tried this thread once before. After spending quite a while describing the plug-ins, the page crashed when I was uploading a video. So, this time I will make it brief.
I wrote two plug-ins, Blendy Bends and Blendy Pends. Instead of trying to describe them in detail again, I will just say this: I created seven versions of an image (the only difference among them is colors). If you want to see them, I uploaded them to openclipart.org (the first one is the same as my icon on this forum).
I then placed all seven on seven separate Vegas Pro tracks, applied Blendy Pends, and this is the result:
I am not sure they would be of any use to anyone else. But if yes, I could make a zip file and upload it to my site. Yes, a zip file, no installer. And, I suppose I would have to make a video describing how to use them.
Note that this would work with any kind of video clips, not just seven different color versions of the same static drawing. Oh, and there is only a 64-bit version, as I think 32-bit Windows is going the way of the dinosaurs.