Thank you :-)
I did try to put the original lightsabres back but the difference in quality was too glaring. It was one thing to put the original LS into the cave fight scene in Empire, because it was very dark with practically a black background, so the blended in quite well but in SW the duel takes place in front of a relatively bright and detailed backgrounds.
I think the only way to fix the LS while keeping the quality would be to actually recreate them and try to stay as true to the original as possible and I really don't have the patience to do that - and if you compared it to the SE, you'd see that they are actually already much improved (although not by me - I used Ady's AVCHD for the duel). And there are only a few shots where they look marginally different from the GOUT.
As to the flashes, you must realize, that there were pink flashes in the original as well, I sometimes even made more red and less pink than in the GOUT. But there should now be almost no violet and plain purple flashes.