SugarGlider

She has sent me a screen shot, and her primary color is black, secondary is white. But the whole screen is navy blue.

My gf and I had just upgraded to the new version of Paint.NET and myself am having no problems at all. My gf on the other hand when she opens a new page and deletes the white blank page, the space turns navy blue instead of the gray and white transparent checkers. Is anyone else having this problem? and how can it be fixed? She is running on Windows Vista. Any help is greatly appreciated!