Makes sense. I just checked IMDB and it says that Star Trek was filmed at Desilu's Culver City stage which was an old RKO building. And sure enough, "Hogan's Heroes" was shot there too.
I know that we have so much dynamic range now that post houses love to really push the ends of the spectrum, but most recent shows drive me nuts when I watch them on TV. I'm constantly having to ride the volume control. It's either too quiet, or way too loud. Why can't they mix the levels on a regular TV? Even on my decent mid-tier Best Buy Magnolia home theater system, I still have to ride the volume. This can also be said with the dynamic range on the visuals. Back in the day, they considered "Godfather" too dark, but that would be be bright compared to "Game of Thrones" "Longest Night" episode.