Here's a quick, fun fix. If you have a chair with an open upholstered back, like mine shown here from Restoration Hardware, look what you can do to customize it. All you need is a piece of fabric and a putty or butter knife. Cut the fabric about 1/4" larger than the back and just tuck the edges into the frame. No sewing, no gluing, no stapling, no kidding. Easy to do and easy to change when you're ready for something a little more colourful or daring. Okay, you've probably figured out by now that I don't sew. I still haven't finished my apron from grade 7. But lucky for you, because it forces me to think outside the sewing box. Right? I think it would be fun to do a different back for each chair.
See my previous posts 'The Midas Touch' on adding gilt to furniture and 'Fabric of Life' on mixing fabrics.