You can tell a Google search is going badly when your query returns your own blog on the first page, and you know you haven't posted the thing you're looking for. And what am I looking for? Well I'm almost ashamed to tell you... Here's my search. Please don't all fall down in surprise that I appear to be only person clamouring for this particular knitwrong. (Actually, I think I have tracked down a source for the pattern, just not a free on-line one; if anyone can tell me whether The Big Book of Knitting is good for more than the one fake pelt pattern, I'd really appreciate having your opinions before I spend my money.) I don't have a firm plan yet, but rest assured that whatever I come up with will be as brassy as hell. Something that definitely is not brassy is Matilda Jane. She's lovely and I don't think I'm going to work on anything else until she's done. Thanks to Badger for the short-row tip in the comments - I found a handy-looking experiment devised by Nona which I'm going to try out for myself and work out which method I like best.
UPDATE: Hillevi at the Knitty Coffeeshop pointed out this chart from Garnstudio, which looks like a winner to me! The next person searching for "leopard print Fair Isle chart" now has a useful result. Thanks Hillevi, and everyone else who helped me out in my quest for brassiness, especially the tireless Seahorse.