frank678 said:

If I can veer off topic for just a second...

Can anyone comment on whether the NTSC pan and scan VHS versions from 1990 and 1992 are from the same source (and/or if any additional processing was done for those releases)

I'm mainly interested in whether the colours would therefore be the same for pan and scan vhs tapes from 1982 up to 1993.

Have no idea if they recycled the same transfer on other releases, there's a possibility however that the '92 VHS got the same treatment as the widescreen tapes that year; a new video master was created from a different IP and used from then on.