keep the existing composition furniture lounge flooring columns ceiling and gym lighting completely unchanged change only the rear walls of the gym visible through the glass to black matte or satin finish add minimal neon signage naturally integrated on the rear walls in colors that complement the gym s ambient lighting include subtle neon glow reflections on nearby walls gym equipment and polished surfaces ensure the black walls have small reflective highlights where appropriate to interact realistically with ambient and neon light maintain ultra realistic rendering high detail cinematic architectural visualization and modern luxury aesthetic do not alter the lounge columns ceiling flooring or gym equipment do not add people
