Fan Casting Primary-Color Champion in Sort by Tropes

We know that Red Is Heroic and Blue Is Heroic. There's almost no better way to say your character is a hero than giving them a costume that is primarily red, blue and sometimes yellow for good measure. If you see a character wearing both red and blue prominently, chances are they are The Hero, the main character, or at least playing for the good guys' side. With blue typically symbolizing heroic resolve and caring, while the red stands for righteous passion and strength, it is a good visual shorthand to the audience that this is a person you can trust.