Since I'm used to wearing handknit socks that fit and feel good on my feet, I couldn't think of just going out and buying some plain black trouser socks.
I'm thinking ahead to when it's cool enough to wear a summer sweater I've been knitting (Brandywine) with some black slacks and a black camisole. That does take some imagination since lately it's been too hot to think about wearing anything but the bare minimum.
Brandywine is done only waiting for the ends to be woven in and a good blocking.
Pattern: Basic cuff down sock pattern on 56 stitches. k3p1 ribbing on cuff and instep.
Yarn: Knitpicks Stroll in black.
Needles: Options #1, 2.5mm
Gauge: 8 stitches/inch, 10 rows/inch