[cortic]

White text on black is as bad as black text on white for me; But I find off black (12/16/33) background and off-white (248/248/248) text significantly reduces eye-strain, for me at least.

If any of you are anywhere near 40 and feeling eye strain; you might be starting to suffer from presbyopia as i and most do at that age, getting a larger monitor and placing it slightly further away helps a lot more than any theme changes.