Lackluster : lacking in vitality, force, or conviction; uninspired or uninspiring.
vibrant : full of energy and enthusiasm.
complex : consisting of many different and connected parts, a group of similar buildings or facilities on the same site
courteous : polite, respectful, or considerate in manner.
superficial : existing or occurring at or on the surface
abundant : existing or available in large quantities; plentiful
Hence , vibrant is the Antonym of Lackluster