In Google Docs, you can add watermark, picture and solid color background to your page. Learn how to insert Background Images in Google Docs.

The Digital Inspiration weblog has a step-by-step for adding HTML to Gmail messages. For those of you who have tried inserting an image or table in Gmail, you've probably noticed that Gmail won't ...

You need to remove the image that is currently in your background by clicking on the grey dot in the top left corner. This will remove the image and allow you to add a new one.