i'd try EncodeHiddenValue="false" bt it dident work ..if i wrote defualt value in editor and dont change it at all still it gives me differnt color code each time page load.

 i.e  In javascript function,

 

 var form = document.forms[0];
          var elm;
          for (var i = 0; i < form.elements.length; i++) {
              elm = form.elements;
              if (elm.type == 'text' || elm.type == 'textarea')
              {
                  if((trim(elm.value) != trim(elm.defaultValue)))
                  {
                        return(true);
                  }
              }