Oh god really? They changed the lasers to pink in the new battlefront oh dear.
The reason the lasers are pink are because they never bothered to re-rotoscope the lasers after applying the Blue Blanket color filter to the film on the hoth scenes.
They were going to be blue for a short period of time but then they decided to eventually make the lasers red. See Below.
http://www.youtube.com/watch?v=CroqdjDv82s
And by the way I am not saying the actual rotoscoping you did was bad, I just disagree with the color on the hoth lasers quite strongly that is all, and you did put the title of your video as "What it should be like" or something so I thought I would point out that I do not agree with the color.
But I am not knocking you... The Lasers, engine glows and lightsabers and all other hand painted effects were one of the last things to be added in the process and that you are doing this is something that should have been done for the Special edition that is also why you see shots in that trailer where they were using sticks because they had still yet to be hand painted over.
This is where the Special edition if you like got lazy and added a blanket color filter changing the colors away from what they originally were and also not performing any re-paint or re-rotoscope to the hand painted effects as they were originally one of the last visual processes to be performed.