Adjusting Skin Tones
To apply a skin tone:
1. Click the Avatar 
button.
2. Click the Skin 
button.
3. Select a skin tone from the Template tab, or the custom tab if you have any custom skin tones saved.
4. Click the Apply 
button to apply the skin tone to the current character.
To adjust the skin tone:
1. Click the Modify tab.
2. Adjust the color balance and the hue, brightness, saturation, and contrast using the slider controls.
In addition to color adjustment, you can modify or replace the texture maps of the skin. See Multiple Channel Texture Mapping for details on texture modification.
Please also refer to Matching Face Color with Skin Color to find out more details.