Select the chart element.
Click the Format tab under Chart Tools.
Click the Format Selection button.
Change Legend options.
Change the fill color, either solid, gradient, picture, or texture.
Change the border color and styles, either solid or gradient line.
Change shadow options, including color, transparency, size, blur, angle, and distance.
Change 3-D format options, including bevel, depth, contour, and surface.
Change text alignment, direction, and angle.