 Usage:  (outColors)=grcolorscheme(inColorScheme)  
 
 Input:

  inColorScheme          String. The color scheme to be returned. Valid are: 
                         "topographic", "greyscale" 
                         
 Output:

  outColors              n x 3 vector. Can be treated as rgb values for the colors 
                         of inColorScheme. 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
