yotsuya, thanks for the info!
EP1: * should * need minimal tweaks to be corrected; BD has less cropping in comparison to DVD/HDTV.
EP2: * seems * to be correct, right?
EP3: I must add that I have the workprint, good quality (apart obvious timecodes and other writings), and the color grading is the same of the DVD, so we * could * assume it is right.
EP4, 5, 6: I agree that GOUT, when slightly corrected to get rid of the pinkish tone, * seems * to be the “less wrong”, followed by 1997 DVB; but the latter is often similar to DVD and BD - for example, blue snow on Hoth; I’m pretty sure there was an avisynth script with settings to correct GOUT colors, but can’t find it at the moment; there was also curve settings for BD, but files are not available anymore…
EP7: I’m pretty sure BD is plagued by teal&orange and could be eventually corrected to resemble the trailers grading; at least, the DVD/BD/3D BD/web download * should * share the same color grading.