[TIMOB-18120] iOS: UI - iOS System Texture Color constants are not working

function main(_window) {
	// this sets the background color of the master UIView (when there are no windows/tab groups on it)
	Titanium.UI.setBackgroundColor('#000');

	// create tab group
	var tabGroup = Titanium.UI.createTabGroup();

	//
	// create base UI tab and root window
	//
	var win1 = Titanium.UI.createWindow({
		title : 'SCROLLVIEW',
		backgroundColor : Ti.UI.iOS.COLOR_SCROLLVIEW_BACKGROUND
	});
	var tab1 = Titanium.UI.createTab({
		icon : 'KS_nav_views.png',
		title : 'SCROLLVIEW',
		window : win1
	});

	//
	// create controls tab and root window
	//
	var win2 = Titanium.UI.createWindow({
		title : 'VIEW_FLIPSIDE',
		backgroundColor : Ti.UI.iOS.COLOR_VIEW_FLIPSIDE_BACKGROUND
	});
	var tab2 = Titanium.UI.createTab({
		icon : 'KS_nav_ui.png',
		title : 'VIEW_FLIPSIDE',
		window : win2
	});

	//
	// create controls tab and root window
	//
	var win3 = Titanium.UI.createWindow({
		title : 'UNDER_PAGE',
		backgroundColor : Ti.UI.iOS.COLOR_UNDER_PAGE_BACKGROUND
	});
	var tab3 = Titanium.UI.createTab({
		icon : 'KS_nav_ui.png',
		title : 'UNDER_PAGE',
		window : win3
	});

	tabGroup.addTab(tab1);
	tabGroup.addTab(tab2);
	tabGroup.addTab(tab3);

	tabGroup.open();
}

var _window = Ti.UI.createWindow({backgroundColor:"white"});
_window.fullscreen = true;
_window.open();
main(_window);