The Ghost and Mrs. Muir (another charming, rarely seen fave) was actually on Laff, not Antenna TV. Anyway, I wish that Warner Archive or some other streaming platform would run all of PDEtD.
Season 1 episodes are in color. Only the pilot was in b&w. As for why the series was never released on DVD by WA, I remember hearing something about music rights issues. I'm still hoping against hope that those issues can eventually be resolved and we get some kind of release by the show's 60th...