Norman Reynolds and the film's art department built the costume. Fett's armor was originally designed for "super troopers", and was adapted for Fett as the script developed. Screen-tested in all-white, Fett's armor eventually garnered a subdued color scheme intended to visually place him between white-armored "rank-and-file" Imperial stormtroopers and Vader, who wears black. This color scheme had the added bonus of conveying the "gray morality" of his character. The character's armor was designed to appear to have been scavenged from multiple sources, and it is adorned with trophies. A description of Fett's armor in the mid-1979 "Bantha Tracks" newsletter catalyzed "rampant speculation" about his origins. By 1979, Fett's backstory included having served in an army of Imperial shock troops which had battled the clone troopers of the Republic during the Clone Wars.