I like the 'Solarized Light' theme

That's all.

The default "white" scheme is a little harsh on the eyes. I know a lot of other people like dark night themes as an alternative, but I dislike them strongly: seeing bright text on a dark background just doesn't work for me.

However, the Solarized Light theme is a nice compromise for me. The beige-y background takes the edge off the brightness. It also resembles a parchment look, which makes the place seem little bit classy.

I think it's good that there are a few theme choices built into the website, to give people options without having to install third-party extensions - and I like the 'Solarized Light' theme.