Random Dot generator  In Stereogram magician, pattern stereogram is set as a default selection.  Click "Random Dot generator"  bar to switch to random dot generator.
  There are 8 colors as default setting, you can set your favorite colors by click "Set Color Value" button and check/uncheck the checkboxes to select/unselect the colors. To generate a random dot picture, at least 5 colors should be selected.