Yes, I’m talking about socks, that one item we tend to forget about. Maybe because I’ve always been a socks guy (I take care of my socks), but I find it weird when guys treat their socks like it's an option. Socks are as quite important as your shoes as well as your clothes. 
But yeah socks is another fashion accessory that can add to your style, which depends on how you wear them. Here I'm wearing a Gucci red and blue stripped socks which I like because it complements the all black look (Acne Studios Hoodie and OAMC trousers with Saint Laurent Sneakers).  If wearing striped or multi-colored clothes, plain colored socks would fit good.
Showing your socks was a trend back in the 90's and it's back now. To appropriate the style you need to wear cropped pants or you can roll the cuffs of your jeans just a little bit above the ankle. Here I'm wearing OAMC slim-fit tapered cropped cotton trousers which fits just enough to show some socks. You should invest in a pair of colorful socks or a plain one, check out some socks on Mr Porter Here.