How good IS your color vision? Can you see the differences?
When it says 1 in 12 men have some sort of colour vision deficiency, do you snort and think, "Ha - ALL of them!" (Get your dude to take the test - perhaps it will explain some of those arguments.)
I wonder if beaders have better than usual ability to distinguish colours? Does that come from practice? Or do you bead because you are drawn to colour?
PS - my score was 8. What's yours?