public void ReturnLightenedColorWhenClamped()
            {
                var   color1         = new ConsoleApp.Immutable.Color(200, 210, 220);
                var   lightenedColor = color1.Lighten(60);
                Color expectedColor  = new ConsoleApp.Immutable.Color(255, 255, 255);

                Assert.AreEqual(expectedColor.Red, lightenedColor.Red);
                Assert.AreEqual(expectedColor.Green, lightenedColor.Green);
                Assert.AreEqual(expectedColor.Blue, lightenedColor.Blue);
            }
            public void ReturnLightenedColor()
            {
                var   color1         = new ConsoleApp.Immutable.Color(0, 0, 0);
                var   lightenedColor = color1.Lighten(10);
                Color expectedColor  = new ConsoleApp.Immutable.Color(10, 10, 10);

                Assert.AreEqual(expectedColor.Red, lightenedColor.Red);
                Assert.AreEqual(expectedColor.Green, lightenedColor.Green);
                Assert.AreEqual(expectedColor.Blue, lightenedColor.Blue);
            }