How to make my tabBar icon to show and tinted

I'm trying to design tab bar icons for an iOS 7 app, so I followed the HIG and I draw a 76x76 401px in white colour and transparent background .png icon that I imported successfully in my project. Then I selected it on the attribute inspector and successfully appeared in the iOS simulator but when I'm pressing the tab bar icon in the simulated app the title become tinted and the draw disappear. How can I make my draw to show and become tinted too.