Select Start  > Settings  > Personalization. The preview window gives you a sneak peek of your changes as you make them.

• In Personalize your background, you can select a picture, a solid color, or a slideshow of pictures you create. Or you can choose Windows spotlight to see a new image from around the world every day.

  Note If you can't select the Windows Spotlight option, your administrator may have disabled the feature—or you may not have gotten the update yet. This feature is being rolled out over a period of time. For more information, see When do I get the newest features for Microsoft 365?.

• In Colors, you can let Windows pull an accent color from your background, or choose your own color adventure. After you've selected an accent color, scroll down to indicate where you want to see the color show up. Or scroll up to Choose your mode and you can see whether your accent color looks better in a Dark or Light mode.