Those ladies at Tin Can Knits are just a factory for knitting patterns! They've recently released a pattern -- maybe more like a recipe -- for a customizable fair-isle-yoke sweater pattern, called Strange Brew (is it bad that I've never seen that movie?) It is not easy to design a fair isle yoke, because the stitch count in the rows or rounds changes throughout the yoke, but you still have to achieve the correct shape in the yoke. A recipe like this would be really handy for plugging in the patterns and colours that you like.
I have quite a few patterns from Tin Can Knits in my stash, and they're all very clear and come in a huge range of sizes (I'm not kidding; they size from infant to plus-size-adult, which is pretty rare in knitting patterns), so you do get a lot in a single pattern.
All images by Tin Can Knits