Urgently needed: black sock standards

Here's a picture I took when I was sorting socks a few months ago:

Look at all these different bastards! What for? Can the human race not agree on a black sock style?

What I'd like is a standardized black sock specification. So I could always buy replacement or additional socks that match the ones I already own. Please: open source community, W3C, Creative Commons -- somebody help make sense of this important issue.