all black may be too much
That's what I was thinking. I don't care much for the look of black hose anyway (just my personal opinion)... it looks to my eye like regular Saxon dress socks. You can't see the turndowns very well, and since black is always a slimming color, it makes the legs appear too thin. If you don't want to go with colored hose, then a charcoal grey or ash grey would do the trick nicely.