I think you're talking about wrinkle finish spray-o-namel paint.
Some of the vacuum supply companies use to sell it. It came in colors like Forest Green, Smoke Silver, Tropical Tan, British Brown, Opel Grey, Neptune Green, French Grey, Jet Black, Celestial Blue and Fire Red.
The Black Rexair model B were done in wrinkle finish.
Compact vacuums were also done in wrinkle finish.
Hoover used a brown wrinkle finish on some of their models.
The Silver Rexair model C were done in Silver Hammertone.