Absolutely. While you want your outdoor space to scream out your style, often the choices are so limited there isn't much that screams originality. For fabrics that are strictly made for the outdoors, check out Sunbrella Fabric.
Sunbrella fabrics are outdoor fabrics for outdoor furniture and other uses. They are made of tough acrylic fibers that resist stains and mildew and never fade or change color due to the sun or the elements. Prices start at $15 a yard and go up from there. They offer so many solids, textures, stripes, and patterns. If you don't feel like sewing your own cushion, the website also offers a great selection of ready made pillow and fabric in a variety of their fabric offerings.