When I create a new rectangle from the Drawing toolbar in OpenOffice Impress 3.4.1, it has really ugly formatting (line color, line width, and fill color). I believe I inadvertently changed the default formatting for the shape. How do I change the formatting to a style I like better?

FWIW, the way to do it in PowerPoint is to right-click on an object whose format you like and select "Set as Default Shape".