A very LIGHT GRAY with real DARK blue print wouldn't come amiss. to make the changes you suggest. LOVE the bigger fonts. Cause even with tri-focals I have problems seeing size 8 pica. Stronger lenses won't fixt the problems either, and I'm years away from cataract surgery so I'm told.
It might seem like I'm being a cold hearted, mean spirited Republican suggesting that those of us with vision limitations should adapt to the site, rather than the site adapt to fit all. But that is the sort of nonsense up with which I will not put. Those who find the visual fine tuning useful will find Opera useful on all sites, so should have it handy anyway. And the vast majority of Freepers will enjoy the more visually pleasing use of moderate color, such as in the background of the sidebar.
Slavish efforts to please all will please none, and resemble nothing more than the Political Correctness that we struggle against daily.