As Hugh McGuire tweeted to me the other day as I collected information about the Swedish Olympic team's hats from people all over the world, "And they say citizen journalism doesn't work." Posh.
Crochet Me's own Bernadette@Finally Teatime found the article that cracked the case (you'll have to dump the text into Google Translate to get a feel for what the article says).
"Gold and Silver medalists in the Cross-Country Skiing - Ladies' 10 km Free event, Swedes Charlotte Kalla and Anna Haag" by Flickr user djtomdog
The designer of the hats, and of the entire line of Olympics clothing for the Swedish Olympics team, is Eva Christensson. The hats were crocheted in China, and she didn't indicate any more information than that.
Huge thanks to all the bloggers, commenters, and Twitterers who dug up information about the hats! This was a grand and fun adventure.
Original Crochet Me translator extraordinaire Annette Petavy is working to receive permission to translate the crochet pattern into English. If she's able to, I'll post the translation here. Fingers crossed! For now, start trying to hunt down some Drops Eskimo yarn in those four colours. We North Americans have a Swedish crochet craze to get in on!