I can read grey on grey just fine, even on my old laptop with its terrible color and worse grey resolution. Moreover, that site isn't grey on grey, it's grey on light cream ( https://en.wikipedia.org/wiki/Cream_(colour) ).
If you haven't already, go to a doctor and get your eyes checked out. What you're describing is not typical.
If you haven't already, go to a doctor and get your eyes checked out. What you're describing is not typical.