# DBSyn Phase 61.1 — Light and Dark Appearance

- Appearance setting under Settings → General: System, Light, Dark; stored in `preferences.appearance`.
- Appearance selection applies to the application window and preferences; System follows macOS automatically.
- Replaced fixed light-mode toolbar, navigator, header, and border colors with semantic macOS colors.
- Removed light-only overrides from settings and splash screen; splash gradient uses adaptive system colors.
- SQL NSTextView and native NSTableView results use light/dark AppKit appearances and semantic text/background colors, refreshed when appearance changes.
- Existing database, charts, SQL editor, backup catalog and administration features retained.

Validation: Swift syntax parsed using `swiftc -frontend -parse`; full macOS Xcode build and visual testing are not available in this environment.