It's available on DVD for the serious Trekkers ---- like me.
They also, in some cases, added some colorful cut in shots that added on to the episode, if only very briefly. In "
Amok Time," as Kirk & co. approach the ritual area there is a wider, sweeping panoramic shot of the place with a background of Vulcan, giving one a better appreciation of where they were.
These episodes were syndicated for awhile as well.
Technically a vast improvement over the original, where occasionally the U.S.S. Enterprise had a transparent hull due to reflections of blue screen.