Yes I already did that.. Its think its not working coz the navigation panel setting its not available..or something like that.. I mean to say that.. Its only navigation panel fault that my back ground image not working..
Because When I take down my notification bar to the bottom.. The nevigation bar hides.. And when I slowelly raise the notification bar up.. The full screen background and the transparent title shows.. And when I release the notification bar.. The background and transparent title disappears..
and it looks like window 7.5..
And ya I already submitted my feedback..