Constant siege_color::aces::ACES_AP1_CHROMATICITIES

pub const ACES_AP1_CHROMATICITIES: Chromaticity = Chromaticity{red: Vec2{x: 0.713, y: 0.293,},
             green: Vec2{x: 0.165, y: 0.830,},
             blue: Vec2{x: 0.128, y: 0.044,},
             white: Vec2{x: 0.32168, y: 0.33767,},}