Thanks Harmy.

This is a quick demonstration of what I mean between the different sources. This is between the 1997SE and 2004SE for example (TOP is 1997SE and bottom is 2004SE):

http://s18.postimg.org/vmzahmz49/starwars5_prem_de_1997.jpg

http://s30.postimg.org/4zjt7qa8h/starwars5_de_2004.jpg

I know the 1997SE is not the best source in this image, given that it is a digital broadcast source, but it does show the colour differences between sources, so I'm not really sure what the original look was supposed to be on the print.