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
Star Wars comics printed in color. This is the title and format that remained until the last issue (#155) was published in June 1986. Further original content was published in issues #94–99, #104–115, #149, #153–157. Throughout this eight-year period, Marvel UK also published several "Star Wars" "Annual"s and "Special"s. In 1978, Pendulum Press, under their educational series "Contemporary Motivators", also published a 31-page loose adaptation of "Star Wars" by Linda A. Cadrain and Charles Nicholas. Produced as part of a package which included an audio tape and a film strip, the comic was specifically designed for classroom use, with typeset instead of hand