[TIMOB-28108] iOS - Ti.UI.RefreshControl crashes when passing a tintColor from TI.UI.fetchSemanticColor

   {
   	"primaryBackground": {
   		"light": "#efece3",
   		"dark": "#001900"
   	}
   }
   

   const primaryBackground = Ti.UI.fetchSemanticColor('primaryBackground');
   
   var win = Ti.UI.createWindow({
       fullscreen:true
   });
   var counter = 0;
   function genData()
   {
       var data = [];
       var i=1;
       for (i=1;i<=3;i++) {
           data.push({properties:{title:'ROW '+(counter+i)}});
       }
       counter += 3;
       return data;
   }
   var section = Ti.UI.createListSection();
   section.setItems(genData());
   var control = Ti.UI.createRefreshControl({
       tintColor:primaryBackground
   });
   var listView = Ti.UI.createListView({
       sections:[section],
       refreshControl:control
   });
   control.addEventListener('refreshstart',function(e){
       Ti.API.info('refreshstart');
       setTimeout(function(){
           Ti.API.debug('Timeout');
           section.appendItems(genData());
           control.endRefreshing();
       }, 2000);
   });
   win.add(listView);
   win.open();