Changing Icon Top Shadow Colors

  Icon top and bottom shadow colors have to be well-matched
  to present the three-dimensional look of DECwindows
  Motif.  DECwindows helps you to do this by automatically
  determining top and bottom shadow border colors when you
  change the icon background color.  This option is indicated by
  the shaded Automatic shadow check button.

  To choose your own icon shadow colors:

  1.  Click on the Automatic shadow check button.

      This option will be disabled.

  2.  Click on the Top Shadow button.
      DECwindows displays the Color Mixing dialog box, which
      lets you select the Top Shadow color you want.  You
      should use the HLS model in the color mixing dialog
      box to choose a top shadow color that is lighter and less
      saturated than the background color.