I've watched the old Dark-Sega JSC rips. The image quality and color balance really remind me of the 1987/1990 VHS releases - a tad too bright, noticeably red-boosted, etc. We had the 1990 tapes (or more specifically, the 1992 "FoxVideo" reprints), so this is what the trilogy looked like when I was watching it as a kid.
I'm assuming that both were sourced from the 1985 IP.