ANSI escape code colors for no_std environments.
```rust use ansi_rgb::*;
fn main() { println!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}", "Red".fg(red()), "Orange".fg(orange()), "Yellow".fg(yellow()), "Yellow green".fg(yellowgreen()), "Green".fg(green()), "Green cyan".fg(greencyan()), "Cyan".fg(cyan()), "Cyan blue".fg(white()).bg(cyanblue()), "Blue".fg(white()).bg(blue()), "Blue magenta".fg(white()).bg(bluemagenta()), "Magenta".fg(magenta()), "Magenta pink".fg(magenta_pink()), "Custom color".fg(Rgb::new(123, 231, 111)).bg(Rgb::new(10, 100, 20)) ); } ```
Context here: https://github.com/phil-opp/blog_os/issues/603