1960-70s Ceramic Yellow Rectangle Ashtray

I suspect this to be from 1960s to 70s. Quite unique ceramic ashtray in yellow (or whatever color they called it back then: banana?; yellow squash?). A few minor chips but otherwise a very pretty ashtray that could be repurposed as a corn-on-the-cob dual buttering trough (?). (just kidding) Thankful to have it as part of my very small collection. Any idea of origin is appreciated, or info on its color name as well as the name/style of the design used. Length: 10 inches. Width: 6-3/16 inches.