I remember them airing quite a lot on Nickelodeon back when they did them. I was a fan +/-. even for my knowledge then, I didn't enjoy them as much, but still paid attention.
The animation to me felt HB-esque (heard that elsewhere too). The colors weren't the bright ones we'd seen in the late 40s and 50s, and were pale in comparison, some-what like a HB cartoon, but HB cartoons were just a little more colorful.
I think one thing that stuck out for me, was the intro music to it. I find it catchy. When it got to SA though, the music seemed to have been altered, if I describe in my own odd way, sounded violent or unprepared
For me, I liked the Cool Cat cartoons the best. Those ones had me a little more entertained. The Colonel was a fun character too for his involvements. Like the cartoon with the ghost