Two things are unique about "Miniature". For starters, to my knowledge it's the first time - ever - I see the almighty actor Robert Duvall with hair on the top of his head! Secondly, it's the only episode of the original 60s "The Twilight Zone" series that has bits and pieces in color! The episode isn't entirely in color, but the most essential sequences - namely the imagination of lead character Charley Parkes - were colorized for the rebroadcasting in 1984.
Charley is an extremely introvert 30-something grey mouse with autistic tendencies (although it's never outspoken like that), who still lives with his overbearing mother and never talked to a girl before. When he gets fired from his desk job - for no valid reason - he seeks distraction in a museum and becomes infatuated with a wooden doll house. Charley fantasizes the lady doll to be alive and talks to her, much to the concern of his family, doctors, and the museum's watchman.
Not the greatest episode of the bunch, but more than worthwhile, if only for the powerhouse performance by Duvall and the unfathomable climax.