In addition to applying one of the preformatted WordArt styles, you can also create your own style by shaping your text into a variety of shapes, curves, styles, and color patterns. The WordArt Styles group gives you tools for changing the fill and outline of your WordArt text. To quickly see if you like a WordArt Style, point to a thumbnail in the gallery to display a live preview of it in the selected text. If you like it, you can apply it.
Click the WordArt object whose style you want to change.
Click the Format tab under Drawing Tools.
Click the Quick Styles ...