Gmail’s web interface has long offered themes, allowing you to change its appearance to suit your whims, but choices were limited to the few canned options Google made available. The color schemes in Gmail themes are still limited to Google’s picks, but now Google is allowing users to upload their own images to create custom backgrounds.
To try out the new options head to Gmail’s settings menu and click the Themes link. Then look for the Custom Themes section where you’ll see a link to “Change your background image.”
