I got a 4. I didn't find it too hard, or visually painful.
__________________ Fingerbang:
1.) The sexual act where a finger is inserted into the vagina or anus. Headbang:
1.) To vigorously nod your head up and down.
I was planning to come in here and say how it's impossible to do this test on a laptop where various viewing angles significantly affect the color... but I scored a 0.