Here's an image to help (the top is the original image, the bottom is after moving the white object to the front):
What I need is an object that is all of the white in the image. The problem is that the white space is created by stacking blue objects on top of white, so I can't just remove all the blue objects from the .svg file. How can I create objects of the visible white areas?
In the example image, that would mean that instead of white and blue stacked on top of each other, it would be a flat image - blue objects with white objects around them. If you move blue or white, there would be nothing behind it.