From an advertisement for Santa Clara County, California appearing in the March 1961 issue of Fortune.
There is a high school north of Salt Lake City where I grew up that had similar exterior paneling in oranges and yellows. The showy façade could be seen from the highway and we mockingly called it Taco Time High, referencing a local Mexican joint with the same color scheme. I miss it now. They have since replaced the panels with dreary beige and tan, of course.