HOW TO Customise your desktop >
Change picture
Big Sur comes with 40 new desktop wallpapers, including different phases as they change during the day. To choose one, go to System Preferences > Desktop & Screen Saver > Desktop Pictures and make your selection.
Add an accent colour
To change the colour of buttons and sidebar glyphs in apps, go to System Preferences > General and choose a colour from the Accent menu. Multicolour leaves apps at the developer’s default, other colours impose your choice.
Change the sidebar
Big Sur’s full-height sidebars in windows allow for more or bigger icons. To add more, go to Finder > Preferences > Sidebar and select. To make them bigger, it’s System Prefs > General > Sidebar icon size and small, medium or large.