Here’s a comparison shot, to hold over until this video preview finishes rendering.
http://screenshotcomparison.com/comparison/213242In case you haven’t noticed the official SW website has many high quality stills from every movie. TPM has the original stills that look really nice. Only one of the stills, the one featuring Yoda, is replaced with a never one from the Blu-Ray version.
http://www.starwars.com/films/star-wars-episode-1-the-phantom-manace-story-gallery
These stills make for great reference, but be careful as the gamma seems to be boosted quite high. The colors are wonderful, though!