The active color theme is stored in your user settings (keyboard shortcut ⌘, (Windows, Linux Ctrl+,)). Select the theme you want and press Enter.Use the cursor keys to preview the colors of the theme.You can also use the keyboard shortcut ⌘K ⌘T (Windows, Linux Ctrl+K Ctrl+T) to display the picker.In VS Code, open the Color Theme picker with File > Preferences > Theme > Color Theme.