public void ReturnsZeroForSameColors()
            {
                var compareColor = new Rgb {
                    R = 140, G = 130, B = 23
                };
                // Todo, should be mocking!!
                var a = new Rgb();

                a.Initialize(compareColor);

                var b = new Rgb();

                b.Initialize(compareColor);

                ReturnsExpectedValueForKnownInput(0.0, a, b);
            }