The original opening for ESB had the crawl as black letters on a white ground, which was then revealed to be the snowy plains of Hoth seen from a bird’s eye view.
In post-production this was revised so that the opening scene of the film took place in space, with Vader’s fleet dispatching probes to look for the Rebels. This kind of accidentally cemented the idea that a SW movie must have its opening crawl take place against a backdrop of stars.