For the matchy matchy among us
Here's what I thought of that complements could include:
Haircolor, tattoos, hats, hair accessories, scarves, gloves, masks, jewelry, shoes, bags, glasses, sunnies, umbrellas, parasols, toppers, outerwear, phone case, nail polish, lipstick, canes, hosery, socks, belts, ties, pocket squares, patches, suspenders, hat accessories, bandanas, water bottles, hardware on coats/bags/shoes, shoelaces.
Did I miss anything?