Revised and Updated. Par BROUGHTON BRUCE. Westerns had been nearly left for dead by the early 1980s. That all changed when the Lawrence Kasdan production of Silverado was released in 1985. Kasdan assembled an all-star cast of actors whose careers were just beginning. It was released at the same time as Back to the Future, which means it had to compete against the summer blockbuster. While not an o…