Question for Z3 Users about UI design.

[Paprika214]

I'm a little curious, is it possible to select the previous Xperia Z2 style for the Z3? For instance, can the icons be reduced to a smaller size (from Sony's Xperia UI, not from a third-party launcher). Also, do you have the option to change the new clock back to old (very elegant looking) Z2 clock for both the home and lock screen? I only ask since I know that, Sony allows you to download different styles for their specific UI, so I just wanted to know if this was a customizable option.

Thanks!