Brian “Buzz” Leming has only one regret about his 50-year career as a sign designer: that historic preservation of his beloved neon art took so long. “The Dunes … they just knocked it down and threw it away. It was horrible,” Leming says. Three years after the 1993 Dunes implosion, the Neon Museum nonprofit was officially launched. Now, after 16 years of planning, the museum opens to the public Oct. 27.