Actually it is GForced GOUT beam and explosion rotoscoped onto an HD background plate.

As to the sources, I used Ady's 14GB 1080p MKV for Empire but the situation with SW is a bit different becuase only an AVCHD is available for Ady's version and 7,4GB is just not enough for 1080p and a lot of detail gets eaten up by compression, which can be clearly seen in this comparison which I posted on the previous page. So when using a high bitrate 720p source there should actually be more detail than in Ady's 1080p AVCHD.

And as to the colour, it has recently come to light that the GOUT colours which Ady used as a reference for his colour correction are far too desaturated and not too close to the theatrical colouring (I'd say even more so with Empire than SW, even Ady himself says the colours in ESB:R will be quite different from his AVCHD version) so I'll try to bring the colours closer to theatrical (although in SW they won't be substantially different from Ady's).