There is a particular kind of grey morning when the whole street seems to have agreed on navy. Coats, bags, umbrellas: all the same careful shade. On those mornings, a red coat is not a fashion choice. It is a small public service.
Colour is a mood you can put on
We dress for the weather we have. Wool when it is cold, linen when it is hot, something dark when the sky is dark. But clothes can also argue with the weather. A yellow scarf in November does not make the day warmer, yet it changes how the day feels, for you and for the people who pass you.
Most of us own more colour than we wear. It sits at the back of the wardrobe, saved for holidays and weddings, for some better version of our lives that never quite arrives on a Tuesday.
Start with one piece
Nobody needs a new wardrobe. Start with one thing you already own and rarely wear: a shirt, a pair of socks, a hat. Wear it on an ordinary day, with everything else you normally wear. Notice how often you think about it, and how quickly you stop.
The bravest colour is the one you wear on a day with no occasion.
What people actually notice
We imagine strangers judging every choice. In practice, people notice colour the way they notice good weather: briefly, and with a small lift of the mood. Nobody has ever been annoyed by a red coat on a grey day.
So wear the coat. The forecast will catch up eventually.