Many window treatments are available only in basic and uninspiring color treatments. Spice things up by changing out your current window treatments with a handmade, colorful version. Cut out geometric shapes from foam paper you can get at a craft store and string them together with fishing line. Hang strings from a decorative rod to finish off the look. If you can't sew, buy a decorative curtain rod, and simply drape a bold-colored piece of fabric over it. You may be surprised at just how stunning this simple approach can look. Sew dollies onto curtains to add a decorative touch.