Use the Windows 10 Settings app to change your desktop background color.
Change background color of every app in Windows 10 - Microsoft Community
I can't change the colors of the icon backgrounds (tiles), taskbar and - Microsoft Community
Change your desktop background color - Microsoft Support
How To Change The Background On Your Xbox One Console, 60% OFF
Task Manager Background Color Dark - Microsoft Community
How To Change The Background On Your Xbox One Console, 60% OFF
Windows 10 Help Forums
How to Change Windows 10 Start Screen Colors, Background, Wallpaper & Themes - Easy How To
How to change a desktop background in Windows - IONOS CA
Unable to change the background display for Windows 7 - Microsoft Community
Change The Desktop Background Color
Get new themes and desktop backgrounds - Microsoft Support
Change application background color window 10 - Microsoft Community