For a draggable element that has padding, the drag image that is created
should respect that background color. Note that none of the drag images
use any of the body element's silver background.
Drag me! Drag image padding should remain transparent.
Drag me! Drag image padding should be transparent.
Drag me! Drag image padding should be white.
Drag me! Drag image padding should be lime.
Drag on top of me just for reference.