It’s a color. A brownish one, I gather. That’s cool and all, but there’s something cooler: this. It’s a little thingie—a snorklebob, if you will—that makes concise and semantic URLs for status updates on Twitter (tweets.)
So, there’s not a cool little field to enter your tweet’s URI here (… yet!), but it’s not difficult to register a tweet with taupe. Just add the Twitter URI of your tweet to this domain name, and taupe will give you a taupe URI.
This taupe URI is guaranteed to last forever (or a reasonable portion thereof), so go ahead and use it in your tweets.