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Change appearance

Item Current behavior
Default Dark
Valid values Dark and Light.
Existing sessions Session data is unchanged.
New sessions The setting changes interface appearance only.
Storage synthezia-settings plus a legacy Synthezia theme key in webview local storage.
Privacy No processing or network boundary changes.
Restart None; the interface changes immediately.

Use the appearance control in the application shell to toggle between dark and light themes. The theme selection persists when Synthezia opens again.

Appearance does not change the provider, model, capture permissions, exported files, or any stored session content.