A recent fix has been made in the Ubuntu Intrepid Ibex system. In the past, form fields, documents, and any other space was filled with a darker-colored background. Now, in the updates, the form fields and documents all now default to the more pleasing white:
So, you may be asking — So what?
It shows that this theme is being developed further and further, and could be the theme used in the final release. So far, I like it! It blends well with the applications, and it is also easy on the eyes.