You can copy (sample) a
            color from a bitmap image on an image plane by first importing the
            image into the 3D View as an image plane,
            and then using the Eyedropper.
         
         
            - Import the image that you want to obtain
               a color sample(s) from as an image plane. For more information,
               see 
                        Import a reference image.
            
- Position the image within the 3D
                  View so it does not block your view of the model. Use
               the Transformation property for
               the image plane to do this.
            
- In the Paint Tools tray,
               select the Eyedropper tool.
               The cursor changes to
                  an eyedropper icon indicating the Eyedropper is active.
                
- In the 3D View,
               click the color area you want to sample.
               The color is sampled
                  and loaded into the color channel for the paint brushes. The next
                  time you paint using that brush the color you copied is used.
                NoteCopying a color using
                     the Eyedropper does not take into
                     account the lighting and shading on the model. That is, the true
                     color of the pixel is sampled.
                   
To keep the Eyedropper tool
            active until you select another paint or sculpt tool press the I
            key as you sample.