My DS and me always disagree on the colour of a few of his t-shirts. I always say they are green and he says blue. I decided to look for a test that would tell me how well I can distinguish between shades as I was getting worried that maybe I see colour differently to other people and I found this test.
www.colorblindnesstest.org/farnsworth-munsell-100-hue-test/
My score was zero, which means I got the highest score possible! Turns out that only 16% of the population get between 0-4 so actually my ability to tell the difference between shades is very very good. I found the test extremely easy to do.
It makes me wonder if the reason I need sunglasses is more because of being overwhelmed by colour rather than light as I use them inside too.
Have a go at the test and share your results.