I wonder...did the orange errors show up on any of the pre-1993 video releases in France, Germany or Spain? I ask because those countries had the episode-less foreign crawls on video until the 90s. If the orange errors showed up on any European video releases prior to the THX versions, it might help crack the mystery of the origin of the IPs used for the DC/GOUT. I think they might have been sourced from subtitle-less IPs used to make the INs for certain foreign markets - or more likely dupes made from said IPs, which would account for the excessive grain, as well as the accumulated dirt and damage from the overuse of the first-gen elements. (The levels of grain on the GOUT are strong evidence that these were not first-gen elements - zombie and others have said this before.)

I'm not sure which foreign markets got "clean" versions. I can assume that France and Germany did. The old Spanish video releases had the episode-less Spanish crawl, but -1 has a Spanish print with an English crawl, credits, and probably alien subtitles too, and the PuggoKrig print is obviously just the English version with Swedish subs superimposed.

I really think that we need to start doing visual comparisons of dirt and damage between sources, including pre-THX continental European releases. I know the Technidisc LD shows more orange marks in other scenes, such as the last shot of the binary sunset sequence right before the wipe, which are not on any other copies I've seen.