Reminds me of WebMatrix. Hmm.... usually I moved to VS Web, so, I couldn't say how comfortable to read gray fonts. But, in my own experience on my site, the casual pages is better with dark gray fonts, it is smoother and more inviting. But, in a page talking about tech, the extra contrast just feels right. I don't know why though. There is that sense of clarity, not just visually, also content wise. It is my own psychology conclusion.