Select the object you want to change.
On the Drawing toolbar, click 3-D Style , and then click 3-D Settings.
On the 3-D Settings toolbar, click the arrow next to 3-D Color .
Click the color you want.
If you don't see the color you want, click More 3-D Colors. Click a color on the Standard tab, or click the Custom tab to mix your own color, and then click OK.
To change the 3-D color back to its default, click Automatic.