code: function(buf) {
  	   var res = buf.unpack('SSSxL');
             var color = {};
             color.red   = res[0];
             color.blue  = res[1];
             color.green = res[2];
             color.pixel = res[3]>>8; // it looks like 3 first bytes contain RGB value in response
             return color;
         }
docs: params: colormap, red, green, blue