Do you have a discerning eye?

Ever wonder how folks perceive colors in different ways? Perhaps its simply because they have difficulty discriminating between certain colors - this online hue test was quick and easy to take - and it showed me where I have some difficulty telling the difference between certain colors - I forgot to grab a screenshot of my finished "test" and test results, but I think I was probably about average with a score of 11. Different monitors may make it more challenging since the test is web based.