noun_type_color = new CmdUtils.NounType( "color",
  ["red", "orange", "yellow", "green", "blue", "violet", "black", "white",
   "grey", "brown", "beige", "magenta", "cerulean", "puce"]
  );

CmdUtils.CreateCommand({
  name: "get-color-code",
  takes: {"color": noun_type_color},
  preview: function( pblock, theColour) {
    var colour = "FFFFFF";
    if (theColour.text == "black")
    {
      colour  = "000000";
    }
    var msg = 'Colour code for '+ theColour.text+'is: ' + colour  ;
    pblock.innerHTML = msg ;
  },
  execute: function(theColour) {
    var colour = "FFFFFF";
    if (theColour.text == "black")
    {
      colour  = "000000";
    }
    CmdUtils.setSelection(colour );
  }

});