First of all, we’ll compare the way dark text on a light background looks in a browser next to light text on a dark background in the same browser. Secondly, we’ll compare the rendering (anti-aliasing) of the text in various rendering engines. And finally, for fun, we’ll look at the un-expected differences in kerning. (via A Brief Comparison of Font and Background Colors Rendered Across Major Browsers in Mac OS X - Shawn Blanc)