Most TV shows have plots that are fairly easy to follow: love, friendship, betrayal. But the most rewarding shows to watch often concern darker themes like warfare or complex political situations. In the cases of these shows, the producers are usually kind enough to help us follow along at home by color-coding the various armies, factions, and alliances. Sad but true: if you suffer from color-blindness, it might be hard to follow these color-coded programs.
With a massive cast, multiple geographic locations, and a complex system of alliances, the "Game of Thrones" universe is as large as it is compelling. Thankfully, some aspects of the characters are color-coded to help viewers follow the action. The main families of the show tend to have similar coloring: the Targaryens are pale with white hair, the Lannisters are blond, the Baratheons dark-complected.
Also color-coded are the costumes: The King's Guard wear white, while the Night's Watch wear black. The Lannister clan has a red and gold livery for their men, and the Baratheons wear a light brown color.
In the "Star Trek" universe, each character enlisted in Starfleet wears a color-coded uniform. In the original series, science officers (like Mr. Spock) wore blue, engineers wore red, and Captain Kirk wore that iconic yellow shirt. Interestingly enough, his shirt wasn't really yellow. Due to the way color film was shot at the time, the green of his costume showed up as a golden yellow.
Later series changed the color code a bit. For example, "Star Trek: The Next Generation" used red shoulders to denote commanding officers, golden yellow for engineers, and blue for science officers.
Based on the classic book series of the same name, the "Dune" TV miniseries is almost as complex as the stories. There's a vast caste system, which the miniseries highlighted with both costuming and lighting choices. The Harkonnens are awash in red, while the Atreides wore neutral shades like beige or off-white, and Fremen wore oranges and browns.
The most iconic and recognizable villains of this classic sci-fi franchise are the Daleks. The color-coding of the Daleks has changed a bit over the years, with high-ranking Daleks usually wearing red or blue battle armor. These days, red is a lower rank with the Supreme Dalek now wearing white battle armor.