Yeah I downloaded the one from the link you sent me. I compared the 720p to the DVD5 one and sometimes the actors' skin look a little more pinkish or yellowish than in the 720p one. For instance, the shot of Luke's face at the 34:15 mark looks a bit more purple in the DVD5.
Also, compare the clothes of the guy walking by at the 42:32 mark. Way more yellow in the DVD5 than the 720p. Actually almost everything in that shot has a yellowish tint that isn't present in the 720p.