conrod::color
pub const BLACK: Color = Color::Rgba(0 as f32 / 255.0, 0 as f32 / 255.0, 0 as f32 / 255.0, 1.0)
=
Color::Rgba(0 as f32 / 255.0, 0 as f32 / 255.0, 0 as f32 / 255.0, 1.0)
Straight Black.