Gmail now lets you use any picture you want as the background image in your Gmail inbox.
“Themes in Gmail are great—there are tons to choose from and they give your inbox a personalized look. But we’ve heard from many of you who thought it would be even better if you could give Gmail an even more personalized look and create themes completely on your own,” Google explained in a blog post.
Effective immediately, there’s a new link in the Gmail “Option” menu. Under “Mail Settings,” click on “Create your own theme” and you will be able to upload images.