I don't think there is a homebrew app to change that, just the coldboot icon. I am familiar with editing the RCOs and XMLs, but I have not attempted to edit that. The problem is that that all of the icons and animations are in a funny format.
They aren't normal PNGs, JPGs, MPGs, etc. so if you wanted to change that animation you would need to find the RCO that contains it (probably coldboot) and then replace it with an animation that had been converted to the proper format. You need RCOMage to decompile/compile the RCO files, but I don't know about the video conversion.