I decided to make a tutorial for exact Kitkat look and feel for our P6's. I hope you like it! So let's begin.
1. Root your device.
2. Install Xposed installer.
3.Install Xposed framework and download these modules
-Smooth System ProggressBars
-Tinted Status Bar (Beta)
4. Activate modules and restart.
5.Open PerAppFonts and change Android System font to ' Roboto Condensed (kitkat)'
6.Install Nova Launcher with kitkat theme.
7.Make customizations as you wish.
8.Open GravityBox go Transparency Manager and set mode to 'BOTH' and make them 100% for all.
And come to Statusbar tweaks and clock settings and make it Center clock with show day of week.
9.Open tinted status bar and go settings make it 'link status bard and navbar colors'
10. For clock use ' Digital Clock Xperia Style' from the market.
11. Download Kitkat Wallpapers.
AND You are done !
If you face problems feel free explain them, if you like it feel free to say thanks
Xposed Installer link
Nova Launcher link
KitKat Wallpaper link