     public var b: UInt8
     
     public init(color: RGBColorModel, alpha: Double) {
-        self.a = UInt8(alpha * 255)
-        self.r = UInt8(color.red * 255)
-        self.g = UInt8(color.green * 255)
-        self.b = UInt8(color.blue * 255)
+        self.a = UInt8((alpha * 255).clamped(to: 0...255))
+        self.r = UInt8((color.red * 255).clamped(to: 0...255))
+        self.g = UInt8((color.green * 255).clamped(to: 0...255))
+        self.b = UInt8((color.blue * 255).clamped(to: 0...255))
     }
     
     public var color: RGBColorModel {

            return RGBColorModel(red: Double(r) / 255, green: Double(g) / 255, blue: Double(b) / 255)
        }
        set {
            self.r = UInt8(newValue.red * 255)
            self.g = UInt8(newValue.green * 255)
            self.b = UInt8(newValue.blue * 255)
        }
    }
    public var alpha: Double {

            return Double(a) / 255
        }
        set {
            self.a = UInt8((newValue * 255).clamped(to: 0...255))
        }
    }
}
