Yarn: Dazzle HT Sock Yarn from the Natural Dye Studio (I think - I got it as unmarked mini-skein.. I also don't know the exact colourway)
Needles: 4 mm / 6 US
Gauge: roughly 7 stitches and 9 rows per inch
Stitch Pattern: Feather and Fan Stitch/Old Shale
Source: BW1, p. 205.
Comments: Sometimes the best stitch for a variegated yarn is a simple lace pattern. :)