Colour co-ordinates of shoes and a small carry-on or cabin bag

First things first. Shoes. Open sandals for summer - or shoes which protect your toes. Protect them from the rain. Protect them from the doors. Protect them from people who drop things out of the overhead luggage onto your feet. Or run over your toes with their wheeled luggage. Or even their feet. Doors which swing back onto your feet? You could have study capped walking shoes for travelling, and sandals for the other end.

I wear socks with sandals. I used to wear socks after I developed sore red spots or broken skin or blisters. Now more often I go for prevention rather than cure. It looks odd to wear socks with a short skirt - until somebody makes that a fashion. The trick is to  either buy black sandals with black socks, white sandals with white socks, and stay cool. Then quickly add black, white, tan, or colour co-ordinated knew high socks or tights on top or instead to look smarter when you get to your destination.  

If you can co-ordinate the colours of your shoes and tote bag and suitcase, plus accessories, scarf, baseball hat, sunhat. gloves, umbrella or parasol to protect you from sun, you have a completely co-ordinated outfit. Plus the matching necklace, bracelet, watch strap and ring. Also your box file or notebook and pen. 

Some people do this automatically. Some men go for everything black, or everything grey, or everything brown, or everything navy. A workplace may co-ordinate their colour scheme.

It can get a bit tiring and same-y. I went to a school which had a bottle green uniform. Admittedly brightened with a thin stripe of pale turquoise and red. With a paler green dress for summer. But I still would not wear bottle green for years. 

Some people simply go for this season's colour. All black is businesslike, safer in a crowd.