I'm a young 50-plus and just picked up a great empire waist knit tunic in a dark chocolate brown (so dark it's hard to tell if it's brown or dark charcoal or even black). What color leggings should I wear with it? Unfortunately, I have bad feet and am incapable of wearing heels, so will have to wear flats. Must I go without any sock? Can I wear a sheer nude knee-high? Or will that look dorky? I don't usually do well with boots because it's hard to find a good fit.