To Create an Appearance for a Material
1. Click File > Prepare > Model Properties. The Model Properties dialog box opens.
2. Click change in the Material line. The Materials dialog box opens.
3. Do one of the following:
If you are creating an appearance for a material that already exists, then select the material in the Materials in Library or Materials in Model list and click Edit > Properties. The Material Definition dialog box opens.
Click File > New. The Material Definition dialog box opens.
4. Click the Appearance tab in the Material Definition dialog box.
5. Click New. The Material Appearance Editor dialog box opens.
6. Create a new appearance. This appearance is added to the palette in the Material Appearance Editor dialog box and in the Appearance tabbed page of the Material Definition dialog box.  
7. Click Close in the Material Appearance Editor dialog box.
8. Click OK in the Material Definition dialog box.
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To copy an appearance, select the appearance in the Appearance tabbed page and click Copy. A copy of the appearance is added to the palette in the Material Appearance Editor dialog box and in the Appearance tabbed page of the Material Definition dialog box. The name of the copied appearance is incremented appropriately based on the name of the selected appearance.