Macro c256_fg 

macro_rules! c256_fg {
    ($col:expr) => { ... };
}

Constructs a 256-colour foreground (text) colour code set (to be used in a control sequence)

Examples:

// Get the codes
assert_eq!("38;5;238", c256_fg!(238));
// Use in a sequence
assert_eq!("\u{1B}[38;5;238m", seq!(c256_fg!(238)));