Dune / guides
Switching themes
Change the color theme for the whole workbench, not only the editor.
Switching themes
Pick a theme
Open the command palette and run Preferences: Color Theme. Use the arrow keys to preview each theme live, then press Enter to keep one.
Dune ships its own themes, and any VS Code color theme from Open VSX works as-is. Dune themes add chrome tokens, so they style the sidebars, tabs, status bar and chat as well.
Make your own
See Theme authoring for the chrome keys a theme can set.