Few days back Google rolled out custom themes for Gmail which was a great way to personalize your Gmail to your taste. The previous version had only two options to choose from either a 'dark' or a 'light' theme but now Google has added a new feature to give your your personal touch to the Gmail background. Now you can add any image to the background of your Gmail account.
You can either add a featured photos suggested by Google or you can also choose from a personal Picassa album or there is also an option to select image from your Android mobile. If you do not have your image saved anywhere, you can directly add URL of any image to get that image as background theme of your Gmail account.
If that's not sufficient, you can also add any image from your local hard disk. You can also give a more personal touch to that uploaded image by choosing from the dark and light option.
To add your custom image background to your Gmail Inbox, go to Settings >> select Themes >> scroll to Custom themes and Click on 'Change your background image' link.
You can either select an image from already featured images or you can find other options like Picasa web album or any online image URL or photos from your mobile or upload any images saved to hard disk.
Problem:: When you upload an image from local disk, there is no any option to crop the image or the preview functionality. It's really very hard to adjust the uploaded image to get the best view of it in Inbox background. So finally I give up and used the featured image instead of my own.