The 1080i HDTV version of the 1999 transfer showed up on rutracker, IIRC.

And yes, that original transfer was pretty dull-looking, wasn't it? A lot of video transfers from the era came from low-contrast interpositive elements and had the gamma cranked to read better on CRT, but Ghostbusters looked so drab and yellow-brown. I remember getting the remastered VHS in the 90s (the Family Collection one) and being blown away by how much better the color was.

I recall a story about Ivan Reitman seeing one of the video transfers and being appalled at how bad it made the special effects look - the garbage mattes and partially transparent exposures and other stuff were clear as day. (Actually, I kind of feel that the original GB transfer shares a lot of the same issues of the original transfer of The Empire Strikes Back, which was also done in 1985. Contrast is too low, everything looks too yellow, effects tricks that were invisible or near-invisible in theaters are painfully obvious.)