Hi, I'm Anvar, I'd be glad to help you today on this
Select Start > Settings .
Select Personalization > Colors.
In the list for Choose your mode, select Light.
Expand the Accent color section, then:
To have Windows automatically pick an accent color, select Automatic.
To manually select an accent color, select one under Recent colors or Windows colors, or select View colors (next to Custom colors) for an even more detailed option.
Kindly refer below guide
https://support.microsoft.com/en-us/windows/cha...
Hope this helps. Let us know if you need further assistance.