Nice find ! I have 4 of them in my basement, but none as complete as the one you bought.
The color is actually beige, light beige for some parts and dark beige for the others.
THe motor is pretty durable, most of them need a bearing change and brushes change, that's about it.
THe weak part is the hose, most of these old fabric-like hoses aren't airtight any more, so succion at the end is sometimes close to nothing.