As an aside, I got a pair of 3D glasses recently. They're the types that have the blue color on the right and red color on the left. I had them on for all of a minute or two and when I took them off, my right eye compensated for the blue filter by making everything seem reddish and my left eye compensated for the red color by making everything seem bluish. So, it's important to note that human eyes compensate for light and color cast almost immediately. So, even if your monitor is calibrated to your light sources, it's easy enough for your eyes to change their acuity based on what is right in front of them. Your eyes may see a dark scene differently than they see a light scene.
For this reason, I don't stress over colors. I know that regardless of the perfection of the viewing medium, my eyes are imperfect. Everyone else will view whatever work I have on an imperfect monitor in imperfect light with imperfect eyes.
111 on uncalibrated monitor, on my Eizo I got to about 50
I am red/green colorblind but that is not a problem because the customer is always right. Especially women because they have superior colour vision.
6. yes, calibration shouldn't matter. also, if memory serves, the "real" munsell test has a time limit. and no staring at screens... they're blocks you move about. the on-line one is kinda fun though.
At work on the monitor I too often critique from I pulled an '8' this monitor suffers in the lower levels of light. I have hope for better on my home monitor!