pub struct Color {
  r : Double
  g : Double
  b : Double
  a : Double
} derive(Eq, 
@moonbitlang/core/debug.Debug
Debug)

fn black() -> Color

fn blend(c1 : Color, c2 : Color) -> Color

fn blue() -> Color

fn clamp(c : Color) -> Color

fn cyan() -> Color

fn gold() -> Color

fn gray(value : Double) -> Color

fn green() -> Color

fn hard_light_blend(c1 : Color, c2 : Color) -> Color

fn hsv(h : Double, s : Double, v : Double) -> Color

fn lerp_color(c1 : Color, c2 : Color, t : Double) -> Color

fn magenta() -> Color

fn multiply_blend(c1 : Color, c2 : Color) -> Color

fn orange() -> Color

fn overlay_blend(c1 : Color, c2 : Color) -> Color

fn purple() -> Color

fn red() -> Color

fn rgb(r : Double, g : Double, b : Double) -> Color

fn rgba(r : Double, g : Double, b : Double, a : Double) -> Color

fn scale(c : Color, factor : Double) -> Color

fn screen_blend(c1 : Color, c2 : Color) -> Color

fn soft_light_blend(c1 : Color, c2 : Color) -> Color

fn to_hex(c : Color) -> String

fn transparent() -> Color

fn white() -> Color

fn yellow() -> Color