High contrast is the issue and is generally uncomfortable when compared to lower (but not too low) contrast. White on Black (or Black on White) are generally b

High contrast is the issue and is generally uncomfortable when compared to lower (but not too low) contrast. White on Black (or Black on White) are generally bad. I prefer the low contrast in my example: http://codepen.io/anon/pen/ZORWRv http://codepen.io/anon/pen/ZORWRv Though even the "medium contrast" is much easier on my eyes than default.