I remember seeing this cartoon on TV (Channel 13, an early 50's incarnation of PBS) here in NYC. I was four or five years old, and I thought it was totally cool.
That channel also deserves the glory of running the Farmer Gray cartoons, my first exposure to classical music)---I heard a song that stayed in my head for twenty years, until I finally heard someone playing it and found out its name (the old English country dance tune known as "Sellenger's Round" or "The Beginning of the World").
Anyway, I saw "The Sunshine Makers" there, and then promptly forgot about it until I saw it on the light show screen at the Fillmore East, many years and some illicit substances later.
Stoned, we loved it...I still do. SO extremely weird. There were other cartoons the Fillmore East ran, including one with Tommy Popski that was all about immigrants and their "funny" names. Hey, social conscience! Rocks.