I'm pinning this for inspiration even though there isn't a pattern given for this. Link takes you to ravelry lorijo's fair isle cardigan. She used unknown sweater pattern, fair isle pattern from some mitts, and colors inspired by a painting.
I finally took a photo of the aspen yoke pullover by Meg Swansen I knit as a sample for a class I'm teaching at Webs. Knit out of various colors of Lopi Lite for the yoke and Valley Yarns Berkshire for the body.