Clone trooper film series and in the "Star Wars" expanded universe media, a number of specialized trooper units are seen, including elite special forces units such as the 'Advanced Reconnaissance Commandos' (ARC troopers), and Null ARCs, who usually work alone. All clone commandos and ARCs were trained by Mandalorian mercenaries; the elite Clone Troopers are known as Shadow Troopers. The style and color of a clone troopers armor often varies depending on their rank, specialization, unit, or environment, for example, the clone troopers on Kashyyyk wear camouflage green scout-style armour whereas the 501st legion wears standard white armor with blue accents. Another
I Lost My Heart to a Starship Trooper Darth Vader he's been banished to Mars" and "Or are you like a droid, devoid of emotion", and other science fiction references include: "I lost my heart to a starship trooper", "Flash Gordon's left me, he's gone to the stars", "What my body needs is close encounter three", "Static on the comm – it's Starfleet Command" and "Fighting for the Federation" The song samples music from "Star Wars", "Thus Spoke Zarathustra" (from ""), and the "spaceship communication" melody from "Close Encounters of the Third Kind". The song was performed on "The Kenny Everett Video Show" by its regular dance troupe