enum Color {
    Named(String),
    RGB(u8, u8, u8),
}

fn to_css(c: &Color) -> String {
    match c {
        Color::Named(name) => name.clone(),
        Color::RGB(r, g, b) => format!("rgb({}, {}, {})", r, g, b),
    }
}

pub fn main() {
    let salmon = Color::Named("salmon".to_string());
    let black = Color::RGB(0,0,0);

    println!("salmon: {}, black: {}", to_css(&salmon), to_css(&black));

}