Originally Posted by Jason Robitaille:
Just tested on a live Pre and can confirm the Dialer skinning does work. Try using this images in the dialog:
Wallpaper
Scroll fade
List Section Line
Just FYI, during a full GUI reload (as is done after applying changes on Tweaks panel), your connection does reset. However, it automatically comes back a minute or two after everything is loaded (no soft reboot needed)
To everyone else, I'll write a Tweaks Guide later today to walk everyone through this new as exciting panel 
Jason, you rock bro. Thanks for the hard work!!!!!!! It's really appreciated. Looking forward to the Tweaks Guide.