The 'nonFlat for iconOmatic' adds a 3D look and shadow to all of the home screen and stock icons.

The background 'Shadow' gives some depth to the icons while the 'Overlay' image makes the icon pop using a raised border around the edges of the icon. Make sure you turn both options on in the iconOmatic settings.

Thanks to subywrex and ter4m for developing this fantastic tweak that puts the style back into the iPhone.

This is an iconOmatic theme that must be selected in Winterboard. Also check the 'Use Overlay (Winterboard)' and 'Use Shadow (Winterboard)' in Settings > iconOmatic.