I have just installed archlinux on a virtual machine and I managed to install lightdm by following the instructions given in
https://wiki.archlinux.org/index.php/LightDM
https://wiki.archlinux.org/index.php/Display_Manager
but lightdm looks like this 
But I want it to look like the default one in ubuntu
How can that be done ?
Ps: I am running xfce4 as the desktop Environment
