[TIMOB-23531] Windows: Tab title color is not changed on selection

// create tab group
var tabGroup = Titanium.UI.createTabGroup();
 
//
// create base UI tab and root window
//
var win1 = Titanium.UI.createWindow({
    title: 'Tab 1',
    backgroundColor: '#fff'
});
var tab1 = Titanium.UI.createTab({
    icon: 'KS_nav_views.png',
    title: 'Tab 1',
    window: win1
});
 
var label1 = Titanium.UI.createLabel({
    color: '#999',
    text: 'I am Window 1',
    font: { fontSize: 20, fontFamily: 'Helvetica Neue' },
    textAlign: 'center',
    width: 'auto'
});
 
win1.add(label1);
 
//
// create controls tab and root window
//
var win2 = Titanium.UI.createWindow({
    title: 'Tab 2',
    backgroundColor: '#fff'
});
var tab2 = Titanium.UI.createTab({
    icon: 'KS_nav_ui.png',
    title: 'Tab 2',
    window: win2
});
 
var label2 = Titanium.UI.createLabel({
    color: '#999',
    text: 'I am Window 2',
    font: { fontSize: 20, fontFamily: 'Helvetica Neue' },
    textAlign: 'center',
    width: 'auto'
});
 
win2.add(label2);
 
//
//  add tabs
//
tabGroup.addTab(tab1);
tabGroup.addTab(tab2);
 
// open tab group
tabGroup.open();