Gmail Blog announced that now you can add your own wallapgers to the Gmail Interface. Just like the Gmail themes now you can use your own wallpaper in the background behind all of your windows, Cahts and panes.
All you need to do to activate the new features is head to "Settings" in Gmail, Then "Themes" tab, and then create your own Theme at the bottom.
Click the Background area in the pop up, Then click "Select" next to "Background Image" and you are all set.

All you need to do to activate the new features is head to "Settings" in Gmail, Then "Themes" tab, and then create your own Theme at the bottom.
Click the Background area in the pop up, Then click "Select" next to "Background Image" and you are all set.