After testing that application Windows Phone 8 launcher (bugs fixed):
So to change your theme like Windows Phone 8 download the app from the Goolge Play
Now open the app and follow the steps and click start
After that we go from choosing a colore for the icons in homescreen all that by staing cklic on an icon to colorate it:
click between "Tile color"
go down to save changing
You chan put an image instead the colores
Now to change tile icon or visible,invisible it click on " change icone"
and choose as you like icons
To bind an app in the icons (bind means changing the app on the icon)
you can click on the white box between "Bind application"
The last thing is saving the changing to do so slow down the window and click "Save"
I think that's all for many question send your problem and Thanks