It probably looked like
by the way, she's still alive. She sold the car to a guy named Don Edwards, or the editor of Fabulous Mustangs Magazine, Jeff Tann. The Mustang was hers for 22 years, and had AC
but I also ran across this:
and now I'm wondering about this car. 1968 Bonneville? 1969 Catalina? Pontiac was a big promoter of I Dream Of Jeannie, and the main characters, Jeannie and the astronaut had a couple of them, one was a 1968 Bonneville
Update Feb 2019, here is Barbara Eden painting the car!