Are you making that up? It is impossible to imagine a company being so stupid they would sue to put a stop to an incredible value in free advertisement.
I thought that the Houston franchise changed its name because they were the first baseball team to have a fully enclosed stadium and the turf was called "astroturf". (And also because NASA mission control was located in Houston. "Astro" = "astronaut....)
Above URL gives History of Houston Colt 45S