I'm also rather fond of the colors orange, grey and black.
So, really, this was meant to be:
Top down. As usual, the pattern is written for multiple sizes, and can be worked on your choice of DPNs, magic loop or 2 circulars. Suitable for knitters with a cable knitting experience, the patterns are charted.
Has all my favourite details - different left and right, a patterned heel and toe. Some nice cabling down one side, not too difficult, but just enough to keep the knitting engaging.
Two notes on the yarn: To keep the color run neat down the front of the foot, I pulled from the center of the ball for the heel. The color runs in the Silk Garden sock are long enough that you can make a (just about) perfectly matched pair. If you're so inclined.
And also note that this yarn is a little heavier than a standard fingering weight, so if you're making a substitution, keep that in mind. Really, why wouldn't you use the Silk Garden Sock, if you're not allergic to it? Not judging your choices or anything, but it's rather lovely stuff. Great colors, and warm!
Pattern available for purchase from Ravelry and (soon!) Patternfish, $5.
Once again, thanks to Claude La Rue for the photography, and to Ruth for the tech editing.