Color

The result of light bouncing off of objects and reaching the viewer's eye. In fiction, color has a subtle but powerful importance that is deeply embedded in all of us. Each color's role in fiction is unique and has different functions depending on where, when, and on what the color appears.

General
Black is an extreme color that is the opposite of white. It's the darkest color of all. Along with red, it's a color of evil. Black is the most common color of text overall, from books to web pages. Black can mean death, mystery, the unknown, or corruption. Corvids such as crows and ravens mean imminent misfortune or death as they are believed to be the bringers of bad luck.

General
Blue is one of the three primary colors, the other two being red and yellow. It's the color of water, the sky, and Earth from an orbital view. Blue is perceived as a passive and emotional color, which is why the phrase "feeling blue" refers to when someone is feeling sad.

Video Games
As is true in many other mediums, blue can be a color of good. It could be the color of the player's team in video games. However, in games like Super Smash Bros., red is the default color of the player's team, and Team Fortress 's Blu Team is only an antagonist to Red Team. In RPGs, blue is a color that denotes the player's mana or items that can restore that mana.

General
Gray is a color that is a mixture between black and white. It often means boredom, but, since it is a mix of the two most extreme colors, it could also be indifference or neutrality. If it's commonly seen in an area like a city, it could symbolize that area's cold, callous atmosphere along with how boring it is living there. In visual media like movies, TV shows, video games, and some colored books, storm clouds are depicted in gray, which is why the color can also represent misery and sadness, sometimes more effectively than blue does.

General
Green is a secondary color that is made by mixing blue and yellow. It's a color that simultaneously symbolizes good health and disease. Dark green is a more sickly color, while brighter shades mean life and good health. Green is the most prominent symbol of nature, with brown and blue also being natural colors. Gelatinous characters who are meant to disgust the audience are typically colored green.

Books
Green can symbolize jealousy, greed, and money (specifically good wealth or fortune). Some magic is green, as are potions with such properties. A green potion is likely a dangerous one, being filled with poison or another harmful substance.

Video Games
In video games, green is one of the main colors of health and things that can heal the player, but it is also the color of poisonous substances. Green can be the color of experience, such as in Minecraft and some Pokémon games.

Rainbow
Rainbow is not a color. It is a rare display of simultaneous colors together that is connected to playfulness and giddy childish behavior.

General
Red is one of the three primary colors, the other two being blue and yellow. As animal blood is red, the color could symbolize violence, pain, and danger. Incorrect tests in school often get an X or number (the percent of correct answers) written in red. Red is also viewed to be an aggressive and angry color, which is often why it's identified as a color of evil.

Video Games
In video games, red can be the color of the enemy team. In RPGs, red is a go-to color for healing potions. It can also be the color of health bars, especially when they're low on HP.

General
White is an extreme color that is the opposite of black. It's the brightest visible color to the human eye. It, like blue, is a color of good, symbolizing purity and serenity. Doves are a white species of bird that are heavily tied to peace, such as in the Bible story of Moses.

General
Yellow is one of the three primary colors, the others being red and blue. It's commonly the color of the sun in fiction and, as such, can symbolize joy and lightheartedness as well as a free spirit and exploration. Gold is a related color, being a shinier version of yellow, which can be placed on luxurious items such as riches (with coins being the most standard), watches and other jewelry, canes, and less traditional objects like expensive cars and houses. Someone who has many golden possessions might be a Millionaire or another kind of success.