Today I've opened new PPA for gtk3/elementary artwork...
this PPA contains now elementary-borderless gtk2/3 theme and Widget Factory! :)
then what is borderless?
yeah I didn't like window outlines surrounds gtk window. and also hate ugly grip!! so I've purged such stuff from original elementary-theme both gtk2 and 3... and then, it appears "fully-flatten" surface. I love such sexy/simple. lol
above shot shows my gnome-shell. yeah darker top-panel had landed. and you could see the "e" icons on the left-top?! that's hackish way... :P