I love the way so many fans of the THX DVD refer to it as the "correct" colour-timing. As far as I'm aware there is no source material of any kind for determining what Halloween looked like in theatres in 1978. However it seems far more likely to me that the new BD is a more accurate reflection of the original colours since the THX timing just screams revisionism and bears all the hallmarks of digital tweaking that simply would not have been possible at the time of the film's release.

The fact that the THX colours might look "better" to some people does not make them correct.