blend_colors.rs

type Color = [u8; 3];

/// Blends two colors.
fn blend_colors(a: Color, b: Color, amount: f32) -> String {
    a.into_iter().zip(b)
        .map(|(a, b)| {
            let a = a as f32 * (1.0 - amount);
            let b = b as f32 * amount;
            let sum = (a + b) as u8;
            
            format!("{:02X}", sum)
        })
        .collect::<Vec<_>>()
        .join("") 
}