If you want it completely blacked out (from exterior and interior), try black contact (shelving) paper. It's easy to work with, and very cheap ($5-$10 per roll)<br><br><img rel="lightbox" src="http://www.homedepot.com/catalog/productImages/300/88/88f74414-b91c-43ad-bbf2-5996e377d30c_300.jpg"...