1. Paint it
One of the easiest, fastest and most inexpensive changes you can make is to paint the door. Choose an eye-catching color to make the entry distinctive or one that reflects your personality. Popular colors are blue — particularly royal blue — red and yellow. You don’t need much paint, so experts advise buying a quart of paint instead of a gallon to save money. It can cost as little as $20 for DIYers.
When Georgiana White, 78, repainted her Sacramento, California, house earlier this year, she went with dark blue for the front door. “I thought it was a great contrast with the lavender [stucco and white brick],” she says. “I love it.”
Experts suggest selecting an exterior pain suitable for the material of your door, whether it’s wood or metal, and sanding the door to help the paint adhere. Before sanding, however, Jepsen says make sure to check if the existing paint contains lead. Although toxic lead paint was banned in 1978, if your home was built before that, the front door paint may contain it. The U.S. Environmental Protection Agency has approved three home test kits: 3M LeadCheck ($11 for a two-pack), D-Lead ($39.50 for seven tests), and one required by Massachusetts and available only to professionals there.
Source: https://www.aarp.org/home-family/your-home/info-2021/revamp-your-front-door.html