By hand
In the admin
- Open Settings › Design. Under Theme, press History on the theme's row.
- Each version shows when, whose hand and the files it changed. Now marks the one readers see; Held marks one that waits.
- Press Show to see that version in the frame. Back to now returns to the latest.
- Press Restore on the version you want. It goes live once the theme is whole.
History is on a theme that someone has edited. The logo, the accent and the theme's settings are saved apart from its files, and change in Settings › Design.